Drinking Water Manual 101

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DRINKING WATER

MANUAL

101DRINKING WATER MANUAL

ADDRESSING LOCAL COMMUNITY DEVELOPMENT PROJECTSFOR ENERGY AUTARCHYREGIONS WORLDWIDE

2012

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This project has been kindly supported by:

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PREFACE

1. INTRODUCTION

Design, Development & Drinking Water Projects

Recommended Practice on Water & Hygiene- Choosing the right combination of solutions

Community projects vs. Private Household Projects

Water and alternative Medicine

Water and Religion

Water Cycle - drinking water for people & animals; hygiene; industry & agriculture

NGOs and Government Interests

Succesful Developemnt Projects: Points to Observe for Succesful Implementation

2. METHODS WATER MANAGEMENT

2.1 COLLECTION

Rain WaterSpring WaterGroundwaterFogwater

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9

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17 - 57

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33 - 41

43 - 53

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2.2 STORAGE

Refillable Personal ContainersBucketsTanks and Reservoirs

2.3 FILTRATION

SedimentationFiltration through a MeshCharcoal and Activated CharcoalSlow Sand FilterCeramic FiltersIron Oxide Filter

2.4 NEUTRALIZATION

UVCookingChemical Disinfection

3. HUMANITARIAN HELP

Development Projects vs. Humanitarian Help

4. INFORMATION TOOLS AND SOURCES

BIBLIOGRAPHY

ACKNOWLEDGMENT

IMPRINT

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97 - 101

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105 - 129

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This manual seeks to provide basic outlines and impulses to social designers and entrepreneurs working on developing projects for safe and clean drinking water. It is a collection of basic instructions when dealing with different types of water, climate and geology and broken down into the four main processes to achieve clean and safe drinking water: Collection, Storage, Filtration, Neutralisation (in order).

Not all of these processes are always needed, but they are separate and can be combined to best suit the needs of the individuals or communities addressed, as well as the types of source water available.

This manual should be considered as a stepping stone in the right direction to inform the design. In-depth research on the chosen methods is needed to fully understand the possibilities and limitations of each of these. We conceived it to be a reference manual.

The content is divided into three sections: Chapter 1 is an Introduction with considerations to take into account when given the task of developing drinking water projects; Chapter 2 Methods is broken down into 4 sections - collection, storage, filtration, neutralization, with bullet-points and illustrations to describe the pros and cons of each sub category. Chapter 3 includes a list of identified and successfully implemented drinking water projects in development regions, as well as readily available projects when confronted with a humanitarian crisis.

PREFACE

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1. INTRODUCTION

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1. INTRODUCTION

DESIGN, DEVELOPMENT & DRINKING WATER PROJECTS

In the past, the trend has been to implement more and less successful grand engineering projects in the Global South to deal with the distribution of water for health and sanitation needs. Due to their scale these engineering projects, although at times successful, are built at the cost of the environment and often misplace entire populations, excluding the precious balance between conservation and community needs. These large scale projects profit densely populated areas but hardly the more remote communities, and often leave a massive debt at national scale. Proposing and building solutions for safe and clean water supply in remote communities goes beyond technical frames: The social frame in which this occurs marks the true success of the project and its long-term sustainability.In this sense, development projects (in the Global South) should aim to benefit

the individuals within a community and their environment

and work towards poverty reduction, food and water security and well-being.

When developing water projects that are to be implemented within communities in the Global South, a holistic approach should be implemented at the early stages of research in order to make the resultant project as meaningful as possible. Particularly important is research in interdisciplinary fields such as engineering, economy, local politics, natural sciences, social and cultural anthropology and,

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of course, design.

Just as important for the success of a project is the in-depth exchange with the right partners. It is always advisable to work with an NGO who is working on site as they will become an important communication channel, even at the early stages of research, between the design solution and the target audience. An NGO working onsite can provide in-depth knowledge on the community as well as in governmental aspects. It is usually a trustworthy entity within the community and in many cases be the administrative force behind project implementation. In this sense and NGO on-site is a key contributor to the success of development projects.

Sustainable development projects are contained within a well thought-out business model and therefore, depending on the focus of the project, consider partnering with the materials and manufacturing industries as well as outlining funding from foundations, the government and MNCs.

IDEO has created a fantastic guide on how-to Design for Social Impact (See Chapter 4. Information Tools and Sources), which can be downloaded from IDEO’s webpage.

RECOMMENDED PRACTICE ON WATER & HYGIENE -CHOOSING THE RIGHT COMBINATION OF SOLUTIONS

It is important to identify certain factors before starting the design process. Here are a few key questions which are good for a start:

1. INTRODUCTION

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• What type of water source are we dealing with? Mist/rain/Spring/river/ground/sea water

• What is the quality of the water? - turbidity/heavy metals/ bacteria/ virus/ particles/ smell

• What quantity of water is needed? Individuals/ small family/ animals/ community

• What resources does the community have? Infrastructure/energy/materials/skills

• What understanding does the community/individuals have to water? Religious/scientific

• What are the expectations of the community/individuals and their level of commitment?

All these questions will help to identify the right combination of solutions when considering collecting, storing, filtering and pasteurizing methods.

COMMUNITY VS. PRIVATE HOUSEHOLD PROJECTS

When considering water projects, it is important to be strategic about the impact –

• Should the project belong to individuals or the community? • Who in the community/household is in charge of the project? Do

they need special training?• Who pays for the project – individuals or the community as a

whole?• What expectations does the community/individual have from

you?

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Be aware of daily rituals that happen within a community through water such a socialisation, as well as the importance of integrating the community in decisions. By rule of thumb always remember the groups of individuals dealing with water : For example, most of the current efforts are focused on women and children; Women represent one of the most important target groups in regards to water supply in the global south by default because they take charge of the household and supplying it with water.

WATER, RELIGION AND ALTERNATIVE MEDICINE

In many communities and cultures, water is often strongly rooted in religious, spiritual or shamanic understanding. Consider contacting anthropologists and medical doctors who have had experience in the region that is the focus of your work to understand the significance of water within that community.

WATER CYCLE - DRINKING WATER FOR SELF, ANIMALS, HYGIENE, INDUSTRY, AGRICULTURE

Access to and use of clean and safe drinking water is paramount for the sustainability of life. We must be aware how many uses clean and safe drinking water has. This helps us to define what quantity is needed daily by each individual and so define which methods are best suited to their needs.

1. INTRODUCTION

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Many uses for water include drinking, cooking, agriculture, giving the animals water, cleaning oneself, washing clothes, sanitation (toilets), but also for celebratory reasons such as ritual, ceremony, divination, healing.

In small communities, particularly those in remote regions or without infrastructure, water for these many uses may come from only one source. Make sure that the quantity of water your solution offers, represents at least 120% of the daily need (to accommodate growth of community, for example) and that the sources and tools are not contaminated by unhygienic habits where cross-contamination can occur.

Important and holistic considerations in project implementation are efforts that invest in such diverse fields such as hygiene, environment, water management and education, which directly impact people and water sources.

NGOs, GOVERNMENT AND INTERNATIONAL INVESTORS’S INTERESTS

Until now we´ve considered research and design using bottom-up approaches. Since mostly projects in social design are dependant on external funding and help with dissemination (to increase impact), it is important to also implement a top-down approach and consider the agendas of local governments, NGOs social investors etc. Be aware of local and government policy – what projects are they interested in implementing? Are there any programmes planned or currently running to which your project could contribute? (education, hygiene...)

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What NGOs or network of NGOs and investors exist in the country or are connected that could help in or be the implementers of your solution? If you are already working with an NGO – what design service are they looking to receive from you?

Investors – how is the project structured so that it is interesting for rich philanthropists, organizations or companies for subsidizing or financing it?

SUCCESSFUL DEVELOPMENT PROJECTS -POINTS TO OBSERVE FOR IMPLEMENTATION

According to WASH (Water, Sanitation and Hygiene, a UNICEF strategy), there are 5 criteria which have to be considered and determine the success of a project. Many times, a project will only fulfil one or more of the criteria, but rarely all five. The following should be considered:

• Application• Technical success • Financial success • Social success • Institutional succes

From page 134 onwards a list of successful projects and their sources presents some precedents that account for the characteristics and properties of projects in development as well as humanitarian help.

1. INTRODUCTION

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2. METHODS WATER MANAGEMENT

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2.1 COLLECTION

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ROOF-C

ANAL-TANK

FETC

HING

HAND-DUG WELL

MACHINE-D

UG WELL

ROOF-C

ANAL GRO

UND TANK

GRAVIT

Y

FULL

SCALE

FOG

COLLECTO

RS

WELL

RAIN

WATE

R

SPRIN

G WATE

R

GROUNDW

ATER

FOG W

ATER

2.1 COLLECTION

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WAT

ER PU

MPING

CANALIZAT

ION

PIPELI

NES

CANALIZAT

ION

PIPELI

NES

ROCK-D

AM

SAND-DA

M

MACHINE-D

UG WELL

GRAVIT

Y

WELL

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2.1 COLLECTION

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RAIN WATER

Rain water harvesting is the collection and storage of rain water before it reaches an aquifer for reuse during dry seasons or to compensate water scarcity. Water is collected and stored in containers and reservoirs before it reaches underground aquifers, which are more difficult to reach.

Rain water has been used to provide drinking water, water for livestock and irrigation, as well as other typical uses. The water collected from the roofs of houses and local institutions can make an important contribution to the availability of drinking water in times of scarcity.

It is mostly suitable for areas where one or two rain seasons per year are common. The methods vary and depend on very diverse factors, like household or communitarian use and water yield.

If the collection and storage of rain water is a practice suitable for the purpose of the project, it is vital to engage people or communities in the implementation of the methods. That way acknowledgment and sensitization with the advantages and importance of the method will ensure the adoption of sustainable and long term practices.

ROOF-CANAL-TANKROOF-CANAL-GROUND TANKWELLROCK-DAMSAND-DAM

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YIELD

2.1 COLLECTION

Cover the containers to avoid access of insects or solid particles into the tank

Avoid influence of sunlight into the water container

Divert the initial flow of run-off rainwater to waste to reduce the concentration of contaminants accumulated on the roof during the dry season.

Rainwater harvested from roofs can contain animal and bird faeces, mosses and lichens, windblown dust, particulates from urban pollution, pesticides, and inorganic ions from the sea (Ca, Mg, Na, K, Cl, SO4), and dissolved gases (CO2, NOx, SOx).

Water not recommended for immediate human consumption!

Filtration and Neutralization needed

Low capital investment for implementation

Easy to build

Household supply

Low

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RAIN WATERROOF-CANAL-TANK


Collection of rain water directly from the roofs of houses and buildings through channels that convey water into a storage unit.

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YIELD

2.1 COLLECTION

Easy to build

Household supply

Kitchen Garden irrigation

Low Running Cost

Low-Medium

Create training programs for the users and shareholders to build, operate and repair the technical equipment

Design easy access to the tank for eventual maintenance

Rainwater harvested from roofs can contain animal and bird faeces, mosses and lichens, windblown dust, particulates from urban pollution, pesticides, and inorganic ions from the sea (Ca, Mg, Na, K, Cl, SO4), and dissolved gases (CO2, NOx, SOx).



High Capital Investment for implementation

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RAIN WATERROOF-CANAL-GROUND TANK


Collection of rain water directly from the roofs of houses and buildings through channels that connvey water into an underground storage good.

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YIELD

2.1 COLLECTION

Cover the well to avoid access of insects or solid particles into the tank

Low-Medium

Rainwater can contain windblown dust, particulates from urban pollution, pesticides, and inorganic ions from the sea (Ca, Mg, Na, K, Cl, SO4), and dissolved gases (CO2, NOx, SOx).



Open Catchment area

Moderate Capital Investment for implementation

Communitarian Supply

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1

3

2

4

RAIN WATERWELL

It consists of a hole dug in the ground with brick walls, and a combination of cement, sand and concrete. Wells for storage are also lined at the bottom to avoid water disappearing into underground aquifers.


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YIELD

2.1 COLLECTION

Rock surfaces should not be fractured or cracked.Alternative: cover the catchment’s ground with impermeable material

Dam foundations must be of solid impermeable rock.

Build stone or mortar gutters across the rock to channel runoff water into the dam

Protect the catchment area against pollution and erosion

Plant abundant trees surrounding the dam to decrease the levels of evaporation



Medium-High

Rainwater can contain windblown dust, particulates from urban pollution, pesticides, and inorganic ions from the sea (Ca, Mg, Na, K, Cl, SO4), and dissolved gases (CO2, NOx, SOx)



Open Catchment area

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BEFORE

AFTER

RAIN WATERROCK-DAM

Lowlands often have natural hollows or valleys which can be turned into water resevoirs by building a dam. This can be a simple stone wall, constructed around the downstream end of hollows or valleys.


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YIELD

2.1 COLLECTION

Dam foundations must be of solid impermeable rock with no soil pockets or fracture lines. Alternative: cover the catchment’s ground with impermeable material

Avoid soil erosion in the catchment area


Plant abundant trees surrounding the dam to decrease the levels of evaporation



Durability

Medium-High

Rainwater can contain windblown dust, particulates from urban pollution, pesticides, and inorganic ions from the sea (Ca, Mg, Na, K, Cl, SO4), and dissolved gases (CO2, NOx, SOx).



Open Catchment area

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RAIN WATERSAND-DAM

Sand dams are reservoirs built across seasonal rivers. The dam can be built with walls of reinforced concrete or sand sacks.


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2.1 COLLECTION

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FETCHINGGRAVITYCANALIZATIONPIPELINES

SPRING WATER

A spring is a source out of the ground out of which water naturally flows. This might be seasonal or permanent, depending on climatological and geographic characteristics.

Spring water has been traditionally used for collection and consumption of water directly from the source. This practice can however put the water at a high risk of contamination. Measures should be taken to protect the spring and its surrounding area from animal or human fecal contamination, as well as a daily surveillance of the spring catchment to avoid blockage of the filter from foliage, snakes, and insects. Be sure that people of the community acknowledge the privilege of having spring water by including them in the planning and building process, procuring a sense of ownership and motivating them to protect the spring and its conditions.

Biological and chemical tests should be performed to determine the water’s quality and if further treatment is necessary for its safe consumption.

In case the spring is seasonal, couple it with complementary collection techniques such as rain water harvesting and bare in mind its utilization for communitarian supply depends on a flow rate of at least 4litre/1gallon per minute previously measured at the source.

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YIELD

2.1 COLLECTION

Pay special attention to the careful usage of the spring

Good accesibility should never compromise the health of the spring


Plant abundant trees surrounding the spring to decrease the levels of evaporation from the soil and erosion

Bio-Chemical testing necessary before human consumption

High risk of polluting the spring

Time consuming

Low Running Cost

Low - Medium

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SPRING WATERFETCHING

People serve themselves with natural spring water direct from the source. It is a very time demanding method, a major development concern for women and children who are often the ones doing this chore.

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YIELD

2.1 COLLECTION


High risk of polluting the spring

High

Pay special attention to the careful usage of the spring.

Be aware that a reliable water flow is available throughout the year.

Good accesibility should never compromise the wealth of the spring.

Low Running Cost

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SPRING WATERGRAVITY

If the stream or spring is at higher elevations water flows naturally through the action of gravity.

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YIELD

Low running cost


Contribution to reforestation efforts

Moderate capital investment for implementation


Open catchment and stream areas

At least a 4litre /1gallon per minute flow previously messured at source

Create programs that promote the protection of the spring against pollution and erosion

Keep the water channels constantly monitored and protected

Channels can be built of halfed bamboo trunks

High

2.1 COLLECTION

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SPRING WATERCANALIZATION

Water runs through open channels conveying it to a tank or cistern. The stream of water flows naturally through the action of gravity.

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YIELD

2.1 COLLECTION

Bio-Chemical testing necessary before implementation

High capital investment for implementation

Slow implementation

Specialized technical know-how necessary for the operation and maintenance of devices

At least a 4litre /1gallon per minute flow previously messured at source

Create programs that promote the protection of the spring against pollution and erosion

Develop a long term strategy for the use of the spring

Direct household supply and distribution possible

Low running cost

Comunitarian Supply

High

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SPRING WATERPIPELINES

Water runs through pipes installed under the ground conveying water to a tank or cistern. The stream of water flows naturally through the action of gravity.

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2.1 COLLECTION

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HAND-DUG WELLMACHINE-DUG WELLWATER PUMPINGCANALIZATIONPIPELINES

GROUNDWATER

Groundwater is located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table.

Aquifers are recharged by rain. Natural discharge often occurs at springs and seeps, and can form oases or wetlands.

Typically, groundwater is thought of as liquid water flowing through shallow aquifers, but technically it can also include soil moisture, permafrost (frozen soil), immobile water in very low permeability bedrock, and deep geothermal or oil formation water.

Biological and chemical tests should be performed to determine the water’s quality and if further treatment is necessary for its safe consumption.

It is obvious that a greater effort and even specialized technical equipment is necessary to reach the aquifer and pump water for its further use or treatment. Therefore help the communities to understand the need to invest in these devices and the capacitation of personal to operate and repair them. Local organizations are the most recommended partners, since they generally have an insight in the community and are trusted partners.

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YIELD

2.1 COLLECTION

Medium


Low running cost

Comunitarian Supply

At least 1,5m/3,3feet diameter for the excavation

The volume of the water in the well below the standing water table acts as a reservoir

Water table should not be lower than 6m/20feet


Restricted to suitable types of ground, such as clays, sands, gravels


Open Catchment area

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GROUNDWATERHAND-DUG WELL


It consists of a hole dug in the ground with walls built with bricks, and a combination of cement, sand and concrete. When compared with wells for rain water collection, these wells give open access to groundwater.

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YIELD

2.1 COLLECTION

Medium - High

Low running cost

Comunitarian Supply

No access for insects or bigger particles into the reservoir

Implement the simplest methods of drilling, particularly those which can be operated by users and stakeholders themselves


Moderate High Investment


Spare parts for machinery

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GROUNDWATERMACHINE-DUG WELL


Machine-dug wells are usually quicker and cheaper to sink than hand-dug wells, need no dewatering during sinking, require less lining material, and are safer in construction and use.

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YIELD

2.1 COLLECTION

Medium - High

Implement the simplest methods of drilling, particularly those which can be operated by users and stakeholders themselves

Create training programs for the users and shareholders to build, operate and repair the equipment

Moderate High Investment


Spare parts for machinery & pump

Low running cost

Comunitarian Supply

No access for insects or bigger particles into the reservoir

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GROUNDWATERWATER PUMPING


Water pumping from a fresh water source in a lower stream is a basic and far more effective practice than scooping or lifting water in a hand-held bucket.

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YIELD

2.1 COLLECTION

Low running cost

Comunitarian Supply

Contribution to reforestation efforts



Open catchment and stream areas

Technical know-how necessary for the operation and maintenance of devices


Keep the water channels constantly monitored and protected.

Channels can be built of halfed bamboo trunks

High

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GROUNDWATERCANALIZATION

Water runs through open channels that convey it to a tank or cistern. The stream of water flows through the action of mechanical devices such as water pumps.


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YIELD

2.1 COLLECTION



Slow implementation


Direct household supply and distribution possible

Low running cost

Comunitarian Supply

High


Keep the water pipes constantly monitored and protected against leaking

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GROUNDWATERPIPELINES


Water runs through pipes nstalled under the ground conveying water to a tank or cistern. The stream of water flows through the action of mechanical devices such as pumps.

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2.1 COLLECTION

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FULL SCALE FOG COLLECTORS

FOG WATER

Through a process known as condensation, atmospheric water vapour from the air naturally condenses on cold surfaces into droplets of liquid water known as dew. The phenomenon is most observable on thin, flat, exposed objects including plant leaves and blades of grass.

As the exposed surface cools by radiating its heat to the sky, atmospheric moisture condenses at a rate greater than that of which it can evaporate, resulting in the formation of water droplets.

Fog collectors work best in coastal areas where the water can be harvested as the fog moves inland driven by the wind. However, the technology could also potentially harvest water for multiple uses in mountainous areas should the water be present in stratocumulus clouds, at altitudes of approximately 400m to 1200m/1300 to 3900feet.

The consequences of industrial emissions have driven fog water and rain water to be poisoned by chemicals. Therefore, in case there are doubts about the quality of the water and no chemical testing is possible, use it for toilets and practices that do not imply direct consumption.

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YIELD

2.1 COLLECTION


Climatologically sensible system

Time consuming


Low-Medium


Arrange the collection net perpendicular to the direction of the prevailing wind

In case there is no certainty about the water quality, use it for toilets and cleaning

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FOG WATERFULL SCALE FOG COLLECTORS

FULL SCALE FOG COLLECTORS

The morning dew is collected on the net. Droplets join to form larger drops that fall under the influence of gravity into a channel at the bottom of the panel, from which it is conveyed to a storage tank or cistern.

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2.2 STORAGE

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2.2 STORAGEWater is stored to have constant access to it. The amount of water required, its further distribution as well as the target group (from individual, over family to community), serve to determine what technique suits best. Accordingly the storage goods for water vary in volume capacity, material, and portability. Nearly all water systems include some form of storage, most commonly a tank.

Storage can be used to:• cover peaks in demand• smooth out variations in supply• provide water security in case of supply interruptions• save buildings, constructions or forests from fire• meet legal requirements• improve water quality• provide thermal storage and freeze protection• enable a smaller pipe to serve for a distant source• provide daily water supply for households • transport water

The containers for water collection ideally should not be the same as the containers for water storage, although this is not always the case. Stored, stagnated water can easily foul, especially if the storage good is open or the water is exposed to sunlight. Therefore water that has been stored for a longer period should be filtered and neutralized.

For the purpose of differentiation between collection and storage containers, let’s say the former are used in conjunction with water sources, the latter with the points of distribution for end-users.

REFILLABLE WATER BOTTLEBUCKETSTANKS AND RESERVOIRS

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PLAST

IC

CEMEN

T REIN

FORC

ED

TANK GRO

UND TANK

REFIL

LABL

E WAT

ER BO

TTLE

METAL

REFIL

LABL

E PER

SONAL

CONTA

INER

S

BUCK

ETS

TANKS

AND

RESE

RVOIRS

2.2 STORAGE

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WELL

WAT

ER TO

WER

EART

H WARE

GROUND TA

NK

METAL

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YIELD

2.2 STORAGE

Water Quality can not be determined

Low Cost

Portability

Low (Personal)

Refill containers regularly and do not let water stored for longer periods

Transparent plastic PET-bottles are widely used for solar disinfection (see SODIS in NEUTRALIZATION)

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REFILLABLE WATER BOTTLE

REFILLABLE WATER BOTTLEBUCKETSTANKS AND RESERVOIRS

There is a huge offer in the market of refillable containers with different capacity, quality, and materials. Plastic and aluminium bottles are the most popular.

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2.2 STORAGE

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BUCKETS

REFILLABLE WATER BOTTLEBUCKETS:

PLASTIC BUCKETSMETAL BUCKETSEARTH WARE BUCKETS

TANKS AND RESERVOIRS

A variety of buckets with different volume capacity, quality, and materials are available in the market.

Containers should in their shape and form discourage water contamination. The contamination can happen because of variety of reasons, such as dipping bacterially contaminated hands or utensils into the water as well as the water becoming a breeding ground for insects and vegetation.

Choosing the right material for storing water in buckets is crucial and often dependant on the type of water: for example, if water is acidic it may react with specific metals; scratches in plastic buckets become bacterial breeding ground that is hard to clean; the usage of transparent containers for long term storage is not recommended, since sunlight can encourage the development of vegetation, which at the same time can feed bacteria.

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YIELD

2.2 STORAGE

Water quality cannot be determined

High risk of contamination

Transportation

Clean containers regularly and do not let water stored for longer periods


Promote creative sanitation practices that restrain users from deeping objects or body parts into the water

Low Cost

Portability

Shock resistant

Low (Personal)

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PLASTIC BUCKETS




Highly popular because of their price, low weight and high durability. However, how does the introduction of plastic encourages environmental issues and interferes with local production?

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YIELD

2.2 STORAGE

Water quality cannot be determined


Corrossion (Iron, Steel, Tin)


Take care that the chemical quality of water does not react with the metal



Low Cost

Reparability

Low (Personal)

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METAL BUCKETS




Although metal can be significantly more expensive than plastic its main advantage is it can be locally manufactured and repaired. Copper & Brass are among the most popular and widesrpead options.

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YIELD

2.2 STORAGE

Water quality cannot be proved


High Weight




Low Cost

Local Production

Low (Personal)

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EARTH WARE BUCKETS




Earthenware containers are less popular because of their comparatively higher weight and low durability, especially when compared with plastic. However, they have a high social impact as they can normally be locally produces, and the raw material has a low environmental footprint.

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2.2 STORAGE

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REFILLABLE WATER BOTTLEBUCKETSTANKS AND RESERVOIRS:

PLASTIC VERTICAL TANKSGROUND TANKSWELLSCEMENT REINFORCED TANKSWATER TOWERS


Several methods of construction for water storage can be found around the world. Communities adapt different solutions, mostly for the collection of water. In most cases, according to the volume of water stored, there is no difference between water collection and water storage goods (i.e. rain water harvesting).

Tanks are defined by their size and capacity. Starting at 100litres/27gallons full tanks cannot possibly be moved around without the help of specially designed tools and carriers. That is why tanks are stationary and used for both collection and storage of water. They also vary on their materiality and placement, from plastic through to reinforced concrete and either underground or even on water towers.

Reservoirs are micro-infrastructural projects (see Rock and Sand-Dams) designed to collect and store a far greater quantity of water for communitarian use.

Projects of this size should be consulted by water experts and engineers, to properly build, together with the community, to identify the most adequate location.

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YIELD

2.2 STORAGE


Logistics of building materials

Place the tank on a safe space away from objects or tools that can damage it

Positioning of the water outlet is informed by the sediment build-up on the bottom of the tank

Low running cost

Easy installation

Protection from sunlight

Medium

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PLASTIC VERTICAL TANKS

Plastic vertical water tanks are used for multiple purposes including above-ground residential cisterns that store safe drinking water, rainwater harvesting, long-term water storage, emergency potable water storage, fire protection water tanks and farm irrigation.



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YIELD



Low Reparability

Pumping device necessary

Low running cost


Durability

Medium - High


Design easy access to the tank for eventual maintenance

2.2 STORAGE

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Plastic or cement water tanks are installed underground to store water.

GROUND TANKS



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YIELD Medium


Low running cost

Comunitarian Supply


At least 1,5m/3,3feet diameter for the excavation




Restricted to suitable types of ground,


Open Catchment area

2.2 STORAGE

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WELLS



It consists of a hole dug in the ground with walls built with bricks, and a combination of cement, sand and concrete. Wells for storage are also lined with bricks at the bottom and do not give access to underground water streams or reservoirs.

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YIELD

2.2 STORAGE




Place the tank on a safe place away from objects or (agricultural) tools that can damage it

The tank should be partially installed underground to secure it


Make sure to design an opening for eventual cleaning and maintenance

Low running cost

Easy installation


Durability

Medium - High

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CEMENT REINFORCED TANKS



Depending on the quality of construction and the climate of its location, cement reinforced water tanks are remarkably durable constructions with almost zero maintenance and high durability.

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YIELD

2.2 STORAGE



Maintenance


Only recommended when larger budget is available

Building site should be stable, flat and not endangered by landslides or earthquakes


Medium - High

Functionality

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WATER TOWERS

A water tower is an elevated structure supporting a water tank. The elevated water builds sufficient pressure to provide for domestic water distribution systems.



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2.3 FILTRATION

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2.3 FILTRATIONSEDIMENTAITIONFILTRATION THROUGH A MESHCHARCOAL & ACT. CHARCOALSLOW SAND FILTERCERAMIC FILTERSIRON OXIDE FILTERFiltration is the first step in purifying water to remove

solids from the water, (from stones, foliage, insects to micro-particles), turbidity, dissolved metals and chemicals which may interfere with subsequent purification steps. Filtration not only makes the water look clearer; by removing particles you are removing potential breeding ground for pathogens.

Water should be filtered BEFORE treating it against pathogens. Filtration not only makes the water look clearer; by removing particles you are removing potential breeding ground for pathogens.The process requires water to be driven through one or more physical barriers that free it from physical particles and even micro-particles. There are even some filtration techniques that are highly effective in filtering out bacteria and germs (see Slow Sand Filter and Ceramic Filters, reverse osmosis).

The techniques hereby presented are most effective when they are combined in order, according to the size of particles that are intended to be eliminated from water. The most effective techniques outlined here are for domestic use, therefore most suited for point-of-use implementation. Engage the community in their construction and promote a strong, solid awareness campaign that sensitizes people and encourages them to implement, properly care for and build upon the techniques that best suit their needs.

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SEDIM

ENTA

TION

SLOW

SAND FI

LTER

CERAMIC

CANDLES

IRON O

XIDE F

ILTER

FILTR

ATIO

N THRO

UGH

A MES

H

BIO FI

LTERS

CERA

MIC FIL

TERS

2.3 FILTRATION

SILVE

R IMPR

EGNAT

ED

POTS

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CHARCOAL &

ACTIV

ATED

CHARCOAL

FILTR

ATIO

N THRO

UGH

A MES

H

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YIELD

2.3 FILTRATION

Time consuming

Does not remove dissolved metals or chemicals

Simple

Moderate capital investment

Low - High

Sedimentation processes can be used to treat waste waters

Sedimentation can not be the only step of the purification process for drinking water


Moringa Oleifera seeds accelerate the processes of flocculation and coagulation of particles and speed up the sedimentation process

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SEDIMENTATION

SEDIMENTATIONFITRATION THROUGH A MESH CHARCOAL & ACT. CHARCOALSLOW SAND FILTERCERAMIC FILTERSIRON OXIDE FILTER

Sedimentation is a process used to settle suspended solids in water under the influence of gravity. Its purpose is to reduce the content of suspended solids as well as the pollutant embedded in the suspended particles.

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YIELD

2.3 FILTRATION



Versatility

Adaptability

Effective

Create training programs for the users and shareholders to build, operate, clean and replace the equipment

Beware: depending on mesh density, water can be filtered from large particles or micro-particles such as pathogens

When designing a system, make meshes accessible for easier maintenance

Low - High

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FILTRATION THROUGH A MESH

SEDIMENTATIONFITRATION THROUGH A MESH CHARCOAL AND ACT. CHARCOALSLOW SAND FILTERCERAMIC FILTERSIRON OXIDE FILTER

Meshes are physical barriers of inter-woven fibres that retain particles while letting fluids flow through. The more dense, the higher the retention of particles, but also the more energy needed to pass the water through.

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YIELD

2.3 FILTRATION

Does not remove dissolved metals

Should not be used as a filter to remove suspended particles


Easy to make

Effective removal of removing chlorine, mercury, iodine, and some inorganic compounds

Low - Medium

Activated charcoal can be “cleaned” by exposing it to sunlight


When designing a system, make filter accessible for easier maintenance

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1

3

2

CHARCOAL & ACTIVATED CHARCOAL


Charcoal consists of elemental carbon in its graphite configuration. These filters are employed in commercial home water treatment systems as well as in large scale municipal treatment facilities to remove chemicals such as chlorine from the water.

Activated charcoal is charcoal that has been especially treated with O2 to open up millions of tiny pores between the carbon atoms, giving it a larger surface area for a highly effective chemical filtration.

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YIELD

2.3 FILTRATION

Not usable against most inorganic chemicals

No removal of viruses

Slow flow rate

Proper care can be tricky because of the delicate biofilm


Can be locally and easily produced

Effective removal of organic substances and micro-organisms

Versatile

Low - Medium

Filters should be cleansed regularly


The water from a well-managed slow sand filter can be of exceptionally good quality with 90-99% bacterial reduction.

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Slow sand filters work thanks to a biofilm that formed in the top few millimetres of the fine-sand layer within the first 10–20 days of operation. This layer provides the effective purification in potable water treatment. Slow sand filters are typically 1-2m/3-6feet deep, depending on the desired flow rate.

SLOW SAND FILTER


COVER

MESH

OUTLET

PIPE

SAND

GRAVELCHARCOAL

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2.3 FILTRATION

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CERAMIC FILTERS

SEDIMENTATIONFITRATION THROUGH A MESH CHARCOAL & ACT. CHARCOALSLOW SAND FILTERCERAMIC FILTERS

SILVER IMPREGNATED POTSCERAMIC CANDLES

IRON OXIDE FILTER

The properties of ceramic are used to filter water, by letting it seep through the tens of millions of pores in the ceramic material, which is usually in a cartridge form, blocking the way for solids which accumulate in it´s large surface area.

Household-scale ceramic filter technology is considered among the most promising options for treating drinking water at the household level in developing countries. Although several different kinds of ceramic filters are used for household water treatment worldwide, among the most widespread are those promoted by Potters for Peace, a US and Nicaragua-based NGO.

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YIELD

2.3 FILTRATION

Low - Medium

Filters should be cleansed regularly


The water from a well-managed filter can be of exceptionally good quality with up to 99% bacterial reduction



Effective removal of organic substances and micro-organisms



Slow flow rate

Improper care can greatly reduce the effectiveness of the filter

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SILVER IMPREGNATED CLAY POTS


SILVER IMPREGNATED POTSCERAMIC CANDLES

IRON OXIDE FILTER

Silver impregnated ceramic filters dramatically increase the effect of the ceramic filter since silver is an effective bactericidal. Most common impregnation is made with Silver Nitrate (AgNO3) or colloidal silver, 3-4 days after the pots have been hard-baked.

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YIELD

2.3 FILTRATION

Limited flow rate (~2 liter/hour)

Prone to stuck through highly turbid water


Can be locally produced

Effective removal of organic substances and micro-organisms and anorganic substances

Simple

Low - Medium

Ceramic candles should be cleansed regularly

Do not pour water too rashly or above the candle

The water from a well-managed filter can be of exceptionally good quality with up to 99% bacterial reduction

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CERAMIC CANDLES


SILVER IMPREGNATED CLAY POTSCERAMIC CANDLES

IRON OXIDE FILTER

Ceramic candles are clay cylinders that take advantage of the ceramic’s micro-scale pores. They are used to remove turbidity, suspended materials and pathogens.

Dirty water from the upper container flows through a ceramic candle into the lower container.

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YIELD

2.3 FILTRATION

Not usable against chlorine


Not effective against pathogens



Effective removal of arsenic

Low - Medium


In case there is uncertainty about the water’s content of arsenic, a layer of old rusty nails can be added to common filters to reduce the content of arsenic

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IRON OXIDE FILTER


Iron Oxide effectively removes arsenic from water through a chemical process, essentially absorbing it out of the water. The simplest method is to include iron nails in a filter system.

Arsenic has been linked to cancer of the bladder, lungs, skin, kidney, nasal passages, liver, and prostate.

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2.4 NEUTRALIZATION

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2.4 NEUTRALIZATION UV COOKING CHEMICAL DISINFECTION

After filtration, the water may look clear and therefore safe and clean to drink. However, most filtration methods do not remove pathogens – viruses, bacteria, of fungi that cause disease and so must be submitted to a pathogen neutralizing process. Attention: dissolved metals and chemicals can only be removed through previous filtration methods.

Bear in mind that most contamination happens at point-of-use through cross-contamination: open sources of collection and storage; infected hands dipped into the water; containers that are used for the daily rations of water have been used as a bath for toddlers and babies and have not been fully disinfected prior to use for drinking water etc.

However, many other factors affect the level of contamination in water, including the length of time water has been stored and therefore stagnant, the amount of algae in the air, upriver contamination through animal activity etc. The list is endless, and it is known for a fact that pathogens are the biggest and most direct killer, causing diseases, specially diarrhoea – particularly when a body is already malnourished, it becomes harder for it to fight minimal pathogen infection.

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SODIS®

SOLA

R DIST

ILLAT

ION

CHLORIN

E

NaCl O

XIDAT

ION

SILVE

R IMPR

EGNAT

ED

POTS

(see

Filtra

tion)

GRAVIT

Y

SLOW

SAND FI

LTER

(see F

iltrati

on)

UVC-LA

MP

UV DISI

NFECT

ION

COOKIN

G

CHEM

ICAL D

ISINFE

CTIO

N

FILTE

RS

2.4 NEUTRALIZATION

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ELECTR

ICITY

GAS

NaCl O

XIDAT

ION

CHLORA

MINES

GRAVIT

Y

SLOW

SAND FI

LTER

(see F

iltrati

on)

UVC-LA

MP

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YIELD

2.4 NEUTRALIZATION

UVA radiation varies according to latitude, altitude, air pollution and cloud cover

Very slow



Effective removal of pathogens

Versatile

Low (Personal)

Create training programs for the users and shareholders to build, operate, clean and replace the PET-Bottles

PET can not be replaced by glass, because a lot of glass bottles have built in UV-filters

Paint the base of the PET-Bottles in black to retain more radiation

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SODIS® (SOLAR DISINFECTION) UVA

UVSODIS® UVAUVC-LAMP

COOKING CHEMICAL DISINFECTION

Clear PET bottles are filled with water and set out under skylight for some hours. The UVA rays of sunlight kill germs such as viruses, bacteria and parasites. The method also works when air and water temperatures are low.

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YIELD

2.4 NEUTRALIZATION

Not usable against chlorine or arsenic


Requires regular power supply

Encourage local entrepreneurship

Highly effective on a broad range of pathogens

Low running cost

Community supply

Medium - High

Create training programs for the users and shareholders to build, operate, clean and replace the technical equipment

Promote creative self-sustaining, long term models that ensure all users have access to clean drinking water

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UVC-LAMP

UVSODIS® UVAUVC-LAMP

COOKING CHEMICAL DISINFECTION

The biological effect of UVC radiation is to destroy the capacity of living organisms to reproduce. Through it germs are neutralized and inhibited to produce any negative consequences on humans.

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2.4 NEUTRALIZATION

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COOKING

UVCOOKING

SOLAR DISTILLATIONWOOD, ELECTRICITY & GAS

CHEMICAL DISINFECTION

Boiling or heating water has been used to pasteurize household water since ancient times. Pathogens are killed at temperatures that exceed 65°C, however the WHO recommends bringing the water to a rolling boil as an indication that a sufficient temperature has been reached to kill bacteria and co.

It is further recommended that boiled water be consumed soon after it has cooled down and preferably within the same day.

A major disadvantage of boiling is its energy consumption in relation to the availability, cost and sustainability of fuel. Areas of the world where wood, other biomass fuels or fossil fuels are in limited supply and must be purchased make the costs of boiling water prohibitive. However, where affordable and sustainable sources of fuel are available without causing environmental degradation, boiling household water is an effective and accessible method of neutralization.

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YIELD

2.4 NEUTRALIZATION

Time consuming

Rather a short term solution

Dependant on hot atmospheric temperatures




Can be used to make drinking water from salt water

Avoid access of insects or bigger particles into the tank

Create training programs for the users and shareholders to build, operate and repair the technical equipment

This solution is rather recommended for disaster relief and emergency cases

Low

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SOLAR DISTILLATION

UVCOOKING



A solar still is a simple way of distilling water, using the heat of the Sun to drive evaporation from humid soil, and ambient air to cool a condenser film. The pure water vapor condenses on the cool inside plastic surface and drips down from the weighted low point, where it is collected and removed.

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YIELD

2.4 NEUTRALIZATION

Rather a short term solution

Burning wood for water disinfection increases the pressure on the forests

High CO2 emissions


Removal of pathogens

Create training programs to raise awareness regarding the use of wood and effects of deforestation

Promote creative self sustaining, long term models that ensure all users have access to clean drinking water

Low

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WOOD

UVCOOKING



Boiling low turbid water is one of the most effective methods for neutralization, but the great amount of energy is a major concern for sustainable, long term development. It is estimated that 1kg of wood is needed to boil 1 liter/0,25gallon of water.

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YIELD

2.4 NEUTRALIZATION

Not usable against chemical pollution



Removal of pathogens

Effective

Create training programs to raise awareness regarding the use of energy in relation to the environment


Low

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ELECTRICITY

UVCOOKING



The great amount of energy needed and the infrastructure to supply it are major issues. Electric devices are also not very suitable because of the high amount of energy they consume and their availability in remote areas.

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YIELD

2.4 NEUTRALIZATION

Production of gas not applicable to all climates



Low running cost


Community supply of gas

Create training programs to raise awareness regarding the use of energy in relation to the environment


Low

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GAS

UVCOOKING



The great advantage of using gas is it can be locally produced. Manure and human feces can be managed through especially designed containers and toilets to produce methane.

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2.4 NEUTRALIZATION

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UVCOOKINGCHEMICAL DISINFECTION

CHLORINENaCl OXIDANTCHLORAMINES

Chemical disinfection is considered by WHO the essential and most direct treatment to inactivate or destroy pathogenic and other microbes in drinking water.

Today, chemical disinfection of drinking water is widely recognized as safe and effective and is promoted and practiced at communitarian as well as at individual point-of-use levels. The most widely used chemical treatments of drinking water are all relatively strong oxidants of chlorine.

Alternative chemical disinfectants sometimes used for drinking water are acids and bases; these agents inactivate microbes by creating either low or high pH levels in the water, respectively. The combined use of multiple treatment processes or “barriers” is a widely embraced principle in drinking water science and technology that is widely applied in community drinking water supplies, especially for surface waters.

There is a risk of over-saturating water with chemicals, which can cause long-term health problems. Chemical disinfection strategies require clear communication tools between experts and users that teach people about the right use and dosage of these substances.

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YIELD

2.4 NEUTRALIZATION

It generates particular taste and odour

Restricted availability in rural and remote areas

It can cause health issues in the long run

Moderate continual investment for implementation


Low - High


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CHLORINE



Free chlorine is the most easy and affordable chemical disinfection method. It is also highly effective against nearly all waterborne pathogens. At doses of a few and contact times of about 30 minutes, chlorine inactivates more than 99% of enteric bacteria and viruses.

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YIELD

2.4 NEUTRALIZATION

Moderate capital investment for implementation


Low running cost



Low - Medium

Create training programs for the users and shareholders to build, operate, clean and replace the technical equipment

It can be generated on site by electrolysis of table salt


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EC GENERATED OXIDANT FROM NaCl



The availability of chemical disinfectants is limited in many parts of the world due to lack of production facilities, transport limitations and high cost. It has been known for many decades that chlorine, perhaps mixed with other oxidants, can be generated on-site by the electrolysis of a solution of table salt.

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YIELD

2.4 NEUTRALIZATION


Not suitable for drinking water



Community supply

Bare in mind it is not as effective as free chlorine treatment


High

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CHLORAMINES



Chloramines are most commonly formed when ammonia is added to chlorine to treat drinking water. The most typical purpose of chloramines is to protect water quality as it moves through pipes and it is therefore NOT recommended for point-of-use applications.

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DEVELOPMENT PROJECTS VS. HUMANITARIAN HELP

Humanitarian relief/aid deals with the displacement of a large amount of people and so solutions must be delivered quickly and for a limited time. Usually pre-manufactured solutions are delivered in terms of safe and clean drinking water, and do not provide a sustainable structure. They serve purely to bridge the gap in infrastructure and the urgent need behind these solutions, relying on large-scale logistical and organizational efforts.

Development projects, on the contrary, ask us to think into the long term future in terms of sustainability - economically, ecologically and in a socio-cultural context. They must be framed bottom-up as well as top-down to ensure meaningfulness and success of the project. In this sense, every development project should begin with local NGO´s and experts working in the designated pilot region; these ensure trusted access to the target group and area and are valuable suppliers of important information in socio-cultural terms, or information as to what the government is interested in implementing (if at all), and under what context any project is implemented in the region.

It is worth investigating successful social design projects, both in humanitarian aid and development areas, and the terms under which they worked, who they partnered with, issues that caused difficulties and how these difficulties were overcome. It is also worth noting that a social design project should be developed hand-in-hand with a thorough social business plan, which by all means increases the chances of succesful sustainability. It is also worth

3. HUMANITARIAN HELP3. HUMANITARIAN HELP

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while understanding that, in the past, different projects have found support and praise by different disparate players: the end user (who in a direct or indirect sense is the owner), the government (who has the power and money to decide to further implement and disseminate the project) and international investors (who by rule of thumb support beautiful design projects that have unfortunately shown little value to the end-user). Ideally, the project should be appealing to all, as social projects must be meaningful to the end-user, approved by the government so that it is subsidized and therefore the impact disseminated, and appealing to international investors who will donate making the project accessible to the largest amount of people possible.

3. HUMANITARIAN HELP

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CAPTION

COLLECTION

RAIN WATER HARVESTING

STORAGE

FILTRATION

NEUTRALIZATION


SANITATION

SAFE CONSUMPTION

Humanitarian Aid

Development

Outdoors

Project Tools


The following list is a collection of significant projects that deal with water, sustainable development and/or humanitarian help.

We find it important to draw on other people´s experiences for the future design and implementation of projects of this nature. This list should help gain insight, and will grow together with the Social Design movement.

We´ve added three major catalogues for social and humanitarian design at the end of this chapter.

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AQUAPLENTY®

ROCK-DAM

SAND DAM

HIPPO WATER ROLLER

The Aquaplenty® produces water out of air, using the humidity in the air. It is a simple and robust water-production device, powered by a wind wheel. It has a water production rate of about 1000litres/264gallons per day, with about the quality of rain water.

Rock catchments utilise the surface run-off of water from flat rocky outcrops on hill tops. By building channels around the rock, rainwater is guided into a pipeline that supplies one or more water tanks. Rock catchments can collect up to 150,000 litres per tank for domestic use.

A cost-effective and innovative solution to compensate water shortages in semi-arid areas. Despite having been built successfully in Africa, Asia and South America for at least the last fifty years, they are still an under-utilised solution for providing clean water and improving the environment.

It’s a barrel-shaped container that con store up to 90litres/24gallons of water. Its design enables people to transport almost five times of water than the traditionally used 20kg buckets by rolling the barrel, which is attached to a steel wireframe to pull or pull.

PROJEC

T

WHAT I

S IT


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H2OnSite S.V. Hans van der Vliet

Excellent

Excellent

Emily Piloton,Project H

H2OnSite S.V.

Excellent – Pioneers of Sand Dams

Excellent – Pioneers of Sand Dams

The Hippo WaterRoller Project

h2onsite.com

excellentdevelopment.com

excellentdevelopment.com

hipporoller.org

DESIG

N

ORGANIZA

TION

MORE

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RAM PUMP

FOG WATER COLLECTION

WATER BOBBLE®

A pump that pushes water with the pressure from down streams up through pipes. The Aid Foundation Inc. has been working on its design to meet sustainability goals of humanitarian projects (like local production and repairability). In field the highest delivery of the pump has been 200m/656feet.

The technology employed today essentially mimics the function of trees and other natural features, using large polypropylene mesh nets erected on ridgelines to intersect moving fog that is being carried by the wind. During the dry season the water collectors are able to produce water for a small community.

A reusable water bottle which filters water as is been drunk, using a replaceable carbon filter. Intended for the consumption of municipal tap water, the carbon filter removes chlorine and organic contaminants making tap water taste better.

PROJEC

T

WHAT I

S IT

LIFESAVER® A reusable water bottle that removes all bacteria, viruses, cysts, parasites, fungi and all other microbiological waterborne pathogens without the aid of any foul tasting chemicals like iodine which is now banned within the European Union.


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Karim Rashid

Aid Foundation Inc.

NEWAH (Nepal Water for Health) Water Aid UK

Bobble,MOVE Collective

aidfi.org

newah.org.npwateraid.org

waterbobble.com

DESIG

N

ORGANIZA

TION

MORE

Michael Pritchyard LIFESAVER® Systems lifesaversystems.com

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SUPER DELIOS

LIFESAVER®JERRYCAN

LIFESTRAW®

It is a portable water filter that can produce safe and clean water by squeezing the container connected to the filter, consisting of a micro-mesh and activated carbon. The produced water can be used for drinking, cleaning wounds and so on.

A reusable can that uses the same principles of the LIFESAVER Bottle, removing all bacteria, viruses, cysts, parasites, fungi and all other microbiological waterborne pathogens without the aid of any foul tasting chemicals like iodine which is now banned within the European Union.

A personal combination of water filters for the direct consumption of contaminated water. To use it, a person sticks the LIFESTRAW® directly into the water and drinks as using a normal straw. After finished, the user blows air to clear the filter. LIFESTRAW® can filter up to 1000litres/264gallons of water

PROJEC

T

WHAT I

S IT

LIFESTRAW®FAMILY

A stationary combination of water filters through which water flows through the action of gravity. Down the running tube a chlorine-saturated purification filter riddled with micro-pores acts as a sieve for bacteria. It can provide water at household level and filter up to 18.000litres/4755gallons of water


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Urban Tech

LIFESAVER® Systems

Vestergaard Frandsen S.A.


LIFESAVER® Systems

Urban Tech

lifesaversystems.com

delios.net

vestergaard-frandsen.com

DESIG

N

ORGANIZA

TION

MORE



vestergaard-frandsen.com

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3 POT SEDIMENTATION

POTTERS FOR PEACE

SONO WATER FILTER

This method treats water by moving it between three different clean pots, or containers, over time to allow water to settle so that germs and solid matter fall to the bottom of the container. This is safer than settling water in one pot, but it does not make the water completely free of germs.

Active since 1998 this initiative has been assisting local partners in certain countries of the Global South to set up filter production and distribution facilities. The advantages of the silver impregnated clay pots are used to encourage entrepreneurship, capitalizing humanitarian help into a social business.

An arsenic filter using three pitchers containing cast iron turnings with sand in the first pitcher and activated carbon with sand in the second. Test results indicate SONO can remove arsenic, manganese (a neurotoxin), iron, and all transition metal ions. Filters can last at least fourteen years at the present usage rate of 100l/26gal per day.

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JOMPYIt is an innovative, environment-friendly, fuel-efficient water boiler. It can be used over any open flame and de-contaminates the water as it passes through.


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Dr. Fernando Mazariegos

Abul Hussam

Abul K. M. Munir

Manob Sakti Unnayan Kendro

Potters for Peace

Burkinabe Red Cross Society

GhanaRed Cross Society

pottersforpeace.com

ghanaredcross.org

msuk-bd.org

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David OsborneJompy – Instant Hot Water Outdoors

jompy.co.uk

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X-RUNNER

WADI

A portable toilet for private households in poor urban areas, where the population is living in small crowded spaces without sewage systems. Every 3-5 days the tank’s content is shipped to a local biogas-plant for processing. Gas and electrical energy and then produced for the community.

It is an inexpensive high-tech tool that traces the progress of solar water disinfection (SODIS). Designed to fit in most common PET-Bottle tops, solar it serves as a tool to inform users if the process has been finished and if the water can be consumed.

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Martin Wesian

Noa Lerner

Helioz R&D GmbH

X-Runner Venture

helioz.org

xrunner-venture.com

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SUSTAINABLE SANITATION & WATER MANAGEMENT BOX

This toolbox recognizes that sectoral approaches are not going to solve the global water and sanitation challenges. It highlights that holistic approaches are needed and the consideration of the entire water cycle from source to see, and back, is imperative for the successful implementation of strategies, understanding that human influence on the water and nutrient cycle are at the center.

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eTOOLKIT ON RAINWATER HARVESTING

DESIGN FOR SOCIAL IMPACT GUIDE

This electronic toolbox has been designed to assist planners, developers and stakeholders for the implementation and construction of rain water harvesting systems. The content is kept at a level that development workers as well as engineers can understand the concept. The modules are designed for a study time of around 20-30 hours in total.

The downloadable pdf summarizes the bulk of IDEO’s learnings and presents them as an invitation to the design industry to participate in the initiative. In addition to the design principles and modes of engagement developed by IDEO, the book includes case studies and prompts to inspire continued learning and involvement.


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Conradin, K., Kropac, M.,Spuhler, D. (Eds)

Seecon International GmbH

sswm.info

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Elizabeth Khaka, UNEP Nairobi; Maimbo Malesu, RELMA Nairobi; Dirk Hangstein, Margraf Publishers Weikersheim; Hans Hartung, FAKT Weikersheim

IDEO

UNEP, Nairobi

IDEOThe Rockefeller Foundation

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BIBLIOGRAPHY

Alternativas de Captación de Agua, Nicaragua; Cajina, Ing. Mauricio; CATIE, 2006.

Analysis and Comparison of Sustainable Water Filters; Mc. Allister, Skye; WHO/Unicef, 2005.

A Critical Look at the Development of Fog Water Collection in Nepal; Apigian, Jeffrey; Nepal Community Development Foundation & Nepal Water for Health, 2005.

Biosand Household Water Filter Project in Nepal; Lee, Tse-Luen; Massachusetts Institute of Technology, 2001.

Cultures Connect Report; Tautscher, Gabriele; June 2011

Household Water Storage, Handling and Point-of-Use Treatment; Nath,Prof. KJ; Bloomfield, Prof. Sally; Jones, Dr Martin; International Forum on Home Hygiene, 2006.

Human-Centered Design Toolkit; IDEO, 2009

Multiple-Use Water Service Implementation in Nepal and India; Mikhail, Monique; Yoder, Robert; IDE, CPWF & IWMI, 2008

Re-Thinking Water and Food Securit; Martinez-Cortina, Luis (ED); Garrido, Alberto (ED); López-Guna, Elena (ED); CRC Press, 2010

Use of Ceramic Water FIlters in Cambodia; Water and Sanitation Program, UNICEF, 2007

WASHtech Review 2012WASHtech Africa review

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Water Aid, Technology Notes; www.wateraid.org, 2012

Water Technology and Society: Learning the Lessons of River Management in Nepal; Gyawali, Dr. Dipak; ZED Books, 2003

Compedium of New and Emerging Health Technologies; www.who.int, 2011

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ACKNOWLEDGMENT

This manual has been realised thanks to the support of many people and institutions. Among them AWS (Austrian Commerce Service) has been indisputably an indispensable financial support thanks to their funding programme Impuls XS.

We have been very lucky to count with the support of Architecture for Humanity, through which we first embarked on a hands-on water project and so found the need for a manual such as this. Our partner organisations Edge of Seven (US) and The Small World (Nepal), who have introduced us to wonderful people and take us to beautiful places that despite their display of generosity and abundace would benefit most from interventions that include a combination of the techniques we have presented here.

We are deeply grateful (in no particular order) to,Cameron Sinclair, Matthias Reisinger and the HUB-Vienna, Karma Sherpa, Emily Stanley, Petra Busswald, Tulga Beyerle, Doris Fröhlich, Franziska Zibuschka, Andreas Gmeiner, Sangitha Sundaresan, Bandana Pradhan, Basudha Gurung, Indira Shankar, Kalayan Gurung, Harald Gründl, Willibald Loiskandl, Lena Goldsteiner and her graphic skills, Stephan Lutter, Vitus Angermeier, the girls of Salleri Girls Hostel, Suman Shakya, Tatjana Pernkopf, Krishna Mani, Barry Katz.

The pressure we are putting on our planet and its treasures require the best humans have to offer. We feel as well, that we can contribute. And this manual is our first step.

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IMPRINT

taliaYsebastian

taliaYsebastian is small Industrial Design Studio based in Vienna, Austria and founded in 2011 by Talia Radford and Juan Sebastián Gómez. Responsible sustainable design with consideration for nature and human needs is taliaYsebastian’s central concern. Their mission is social change - a conscious transformation of behaviour and consumption for a better co-existence with oneself, one another and our envionment - through design. In short, quality of life. By involving expert opinions from disparate disciplines in hard and soft sciences and the economy as well as from experienced Social Designers, their developments are precisely targeted to meet user needs.

Following international internships with Michael Young in Hong Kong and Spime Technologies in India, taliaYsebastian have specialized on “Human Design” in conjunction with new technologies. They have already received several awards, among them the 2011 Victor J. Papanek Social Design Award; the 2012 red dot Design Award and the iF Design Award 2013 for product design.

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101 Drinking Water ManualAdressing Local Community Development Projects for Energy Autarchy Regions Worldwide

Edited and Produced by: taliaYsebastian, 2012

This work is licensed under a Creative Commons Attribution - NonCommercial - NoDerivs 3.0 Unported License.

Graphic Design: Talia Radford, Juan Sebastián Gómez, Lena Goldsteinerwww.taliaYsebastian.com

This project has been kindly supported by:

Drinking Water Manual 101

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