Water Water Chapters 19 and 20 Chapters 19 and 20 Advanced Placement Environmental Science La Canada High School Dr. E
Apr 01, 2015
WaterWater Chapters 19 and 20Chapters 19 and 20
Advanced Placement Environmental ScienceLa Canada High School
Dr. E
Key HKey H220 Characteristics0 Characteristics
• Water is the prime constituent of all living organisms.
• Water moves easily-from one physical state to another, and from one place to another.
• Water slowly absorbs and releases large quantities of energy.
• Water is a superior solvent.
• Michael D. Lee Ph.D. Geography and Environmental Studies(Source: Wright & Nebel 2002)
Importance of Water PropertiesImportance of Water Properties
Lack of access to clean water supplies can quickly lead to dehydration and death.
Running water can quickly erode topsoil rendering farmland infertile and streams contaminated.
Chemical spills, excess nutrients & acids dissolved in H20 can lead to massive die offs.
Michael D. Lee Ph.D. Geography and Environmental Studies
• WaterWater–Supply, Renewal and UseSupply, Renewal and Use– Too little Water– Dams and Reservoirs– Transferring water– Groundwater and Saltwater– Efficiency– Too Much Water
• Water Pollution
Available WaterAvailable Water• Total = 326 million cubic miles • 97% of Earth’s water is in
oceans• 2.997% is locked up in ice caps
and glaciers• 0.003% is easily accessible
– Soil moisture– Groundwater– Water vapor– Lakes– Streams
http://ga.water.usgs.gov/edu/waterdistribution.html
Water Supply & UseWater Supply & Use
www.athensclarkecounty.com/~stormwater/ SW%20Management.htm
Water CycleWater Cycle
Hydrologic CycleHydrologic Cycle• Powered by solar energy and gravity • Evaporation and precipitation • Continuous recycling of water
– Runoff – Infiltration – Evaporation – Temporary storage as snow and ice – Temporary storage in lakes – Temporary storage in plants (transpiration) and animals – Chemical reactions with rocks and minerals – Volcanism also causes melting of snow caps and
mudflows as melted water mixes with ash – Source of additional water? volcanism (steam)
Surface WaterSurface Water
• Surface runoff flows into streams, lakes, wetlands and reservoirs
• A watershed or drainage basin– Region that drains into a streams, lakes,
wetlands or reservoirs
www.canaanvi.org/assistance/ watershed.asp
GroundwaterGroundwater• As precipitation infiltrates and percolates
through voids in soil and rock– Pores, fractures, crevices, etc.
• Shallow rock has little moisture• Zone of saturation is at a depth were ground
is filled with water • Top of this zone is water table
– Falls in dry weather– Rises in wet weather
Groundwater MovementGroundwater Movement• Groundwater moves from recharge area
through an aquifer and out a discharge area– well, spring, lake, geyser, artesian well, steam,
ocean
• Normally moves downhill at only a meter per year
• Some aquifers get little recharge and were formed thousands of years ago
• Removal from these nonrenewable resources is called water mining
Use of Fresh WaterUse of Fresh WaterUnited States• 41% agriculture• 38% power plant cooling• 11% industry• 10% public
China• 87% agriculture• 7% industry• 6% public
Water UseWater Use Globally Globally People and Planet
• 70 per cent of all water withdrawn for human use on an annual basis is soaked up by agriculture (mostly in the form of irrigation)
• Industry accounts for 23 per cent
• Domestic use (household, drinking water, sanitation) accounts for about 7 per cent
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50
60
70
Irrigation
Industry
Domestic
Water Use Water Use People and Planet
• The average person needs a minimum of five litres (1.3 gallons) of water per day to survive in a moderate climate at an average activity level, according to UN figures.
• The minimum amount of water needed for drinking and cooking, bathing and sanitation is 50 litres (13 gallons).
Water Use - Water Use - (minimum 13 gallons) (minimum 13 gallons) People and Planet
• The average person in the United States uses between 250 to 300 litres of water (65-78 gallons) per day for drinking, cooking bathing, and watering their yard.
• The average person in the Netherlands uses 104 litres per day (27 gallons).
• The average person in the African nation of Gambia uses 4.5 litres per day (1.2 gallons of water).
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United States
Netherlands
Gambia
Water Use - United StatesWater Use - United States• In 1990, about 408,000 million gallons (Mgal/d)
of water were used each day
• Of that, about 339,000 Mgal/d was fresh water and about 69,400 Mgal/d was saline water
• California used the most water, about 46,800 Mgal/d, with most of that going towards irrigation
• The state with the second-highest water use was Texas, with about 25,200 Mgal/d, mostly for use in the power-production industries and for irrigation
http://ga.water.usgs.gov/edu/wateruse.html
• Some conversions:
• 1 Mgal/d = 1.547 cubic feet per second
• 1 Mgal/d = 0.6944 thousand gallons per minute
• 1 Mgal/d = 1,121 thousand acre-feet per year
• 1 million gallons = 3.07 acre feet
• WaterWater– Supply, Renewal and Use
–Too little WaterToo little Water– Dams and Reservoirs– Transferring water– Groundwater and Saltwater– Efficiency– Too Much Water
• Water Pollution
Too Little WaterToo Little Water
• Causes– Dry climate– Drought - a period in which precipitation is
much lower and evaporation is much higher– Desiccation - drying of soil because of such
activities as deforestation and overgrazing– Water stress - low per capita availability of
water caused by overpopulation
Precipitation Varies GreatlyPrecipitation Varies Greatly• US cities vary in their precipitation from an
average of less than 8 to 60 inches a year.• Globally, the extreme is even greater – averages of
less than 1 inch to more than 70 inches per year.• However, this masks variations between years.• Some locations may get ten times more, or less
than 1/10 of their annual average from year to year.• Meeting demands for water when precipitation is
so highly varied creates many challenges.
Global Precipitation PatternsGlobal Precipitation Patterns
Wright and Nebel, 2002.
Michael D. Lee Ph.D. Geography and Environmental Studies
http://www.peopleandplanet.net/graphs/Freshwateravailability.jpg
• In most areas of Nevada and California, potential transpiration and evaporation is in excess of precipitation, which causes a net moisture deficit
• WaterWater– Supply, Renewal and Use
– Too little Water
– Dams and Reservoirs and Dams and Reservoirs and
– Transferring waterTransferring water– Groundwater and Saltwater
– Efficiency
– Too Much Water
• Water Pollution
Egyptians perfected the shadouf to draw water from canals and the river to the adjacent bank and into ditches.
Nomadic herders and, later, sedentary civilizations developed chains of wells – qanats, karez, foggaras, falaj – to route water across miles of desert from distant aquifers.
Michael D. Lee Ph.D. Geography and Environmental Studies
Slaters Mill in Rhode Island, one of the earliest American water powered industrial systems.
Example of noria – water driven wheels lifting water into irrigation ditches or elevated aqueducts (This is in Vietnam)
Artists impression of the Three Gorges Project, Yangtze River, China – world’s biggest hydropower project 19 m kW.
Michael D. Lee Ph.D. Geography and Environmental Studies
Hoover Damwww.wvic.com/res-main.htm
Aswan Dam, Egypt
Fish Bypass System
Chinese Dam
Earthen Dam
Large Dams - ProsLarge Dams - Pros
• Collect and store water from rain and snow
• Produce electricity
• Irrigate land below the dam
• Control flooding
• Provide water to cities, towns and rural areas
• Provide recreational activities such as swimming, boating, fishing
Large Dams - ConsLarge Dams - Cons
• Enormous loss of water due to evaporation
• Mass of water can cause earthquakes
• Flooded land destroys forests or cropland and displaces people
• Danger of Dam collapse
• Downstream areas deprived of nutrient-rich soil, which will eventually clog the reservoir
• Migration and spawning of fish disrupted
• Expensive to build
Los Angeles Aqueduct (DWP)Los Angeles Aqueduct (DWP)Eastern Sierra
• Started in 1908 by William Mulholland
• appropriated water feeding Owens Valley
LA Aqueduct is
Mono LakeMono Lake • In 1941, L.A. DWP started diverting Mono Basin streams to add to L.A. Aqueduct.
• The state and courts now mandate raising the level of the lake 17 feet. It will take about 20 years.
Colorado River AqueductColorado River Aqueduct• Established 1928 to bring water to L.A. and rest of
Southern California
• First delivery in 1940; serves 15 million people
• Lawsuit from Arizona (1953) finally began to be implemented in 1985 - amount will decrease and this amount will be replaced by State Water Project water.
• Five pumping stations
• Diversions for agriculture
The State Water Project: The State Water Project: The California AqueductThe California Aqueduct
• Constructed beginning in the 1960s.• About 1/2 for irrigation, about 1/2 for
domestic use.• Domestic use supply helps offset that lost to
Arizona in 1985 court case.• Includes the huge Oroville Dam on Feather
River in Sierra foothills. • Pumps at Tracy lift water, then it flows by
gravity to the Tehachapi Mountains.
California Aqueduct
Dams and Global Dams and Global River River
DegradationDegradation
Aswan Dam, Egypt Lake NasserAswan Dam, Egypt Lake Nasser
Shasta Dam, CAShasta Dam, CA
The Geography of Large DamsThe Geography of Large Dams
• Over 39,000 large dams by 1986
World Reservoir World Reservoir InundationInundation
Area submerged– size California
Upstream of Dams - Negative Impact Upstream of Dams - Negative Impact • Environment
– Loss of terrestrial/riparian habitat and species
– Creation of artificial lacustrine (lakes) system
– exotic species introductions– Reservoir/storage for contaminants
• Cultural / social– Loss of cultural resources– Displacement of families (villages,
regions)– Water quality hazard
• Economic– Shift in land use / economy– Water loss via evaporation– Water loss via seepage
• Aesthetic– landscape inundated
Upstream Impact of DamsUpstream Impact of Dams• Built 1956-1966.
• Aesthetics: Glen Canyon, Colorado River
• WaterWater– Supply, Renewal and Use– Too little Water– Dams and Reservoirs– Transferring water
–Groundwater and SaltwaterGroundwater and Saltwater– Efficiency– Too Much Water
• Water Pollution
Tapping GroundwaterTapping Groundwater
• About half of the drinking water in the United States is pumped from aquifers
• Roughly 40% of the water in streams/river is from groundwater
• The number one removal of water from aquifers is for irrigation for farming
Groundwater ProblemsGroundwater Problems
• Aquifer depletion – more water is removed than is naturally
refreshed
• Aquifer subsidence – land sinks due to withdrawal of groundwater
(Mexico City)
• Intrusion of salt water into aquifers
• Contamination from multiple sources
Groundwater DGroundwater Depletionepletion • Aquifer Depletion
– 95% of water removed from Ogallala Aquifer is for irrigation and the removal rate is greater than the refreshing rate
– Saudi Arabia, China, northern Africa, southern Europe, Middle East, Thailand, India
www.npwd.org/Ogallala.htm
Aquifer SubsidenceAquifer Subsidence
• Mexico City’s aquifer has shrunk enough that land has dropped up to 7.5 m
http://www.geotimes.org/july01/sinking_titanic_city.html http://www.science.uwaterloo.ca/earth/waton/mexfig2.html
Well casing projecting from the ground (40 years)
Salt Water Salt Water IntrusionIntrusion
• “One-third of the water supply for coastal areas of Greater Los Angeles comes from local ground-water sources.
• Saltwater has penetrated a part of the supply, and a significant part of the remaining supply is at risk.”
• U.S. Geological Survey Fact Sheet 030–02
DesalinationDesalination• Removal of salts from ocean water
– distillation • first land-based desalination plant was established in 1928 in
the Netherlands
www.oas.org/usde/publications/ Unit/oea59e/ch21.htm
• Removal of salts from ocean water – reverse osmosis
using high pressure
• The Santa Barbara facility began operation in March 1992
http://www.tampabaywater.org/MWP/MWP_Projects/Desal/Desal.htm
DesalinationDesalinationhttp://urila.tripod.com/
• WaterWater– Supply, Renewal and Use– Too little Water– Dams and Reservoirs– Transferring water– Groundwater and Saltwater
–EfficiencyEfficiency– Too Much Water
• Water Pollution
Reducing Water WasteReducing Water Waste• Up 70% of water is lost through evaporation
& leaks
Specific Uses for Recycled Water
• Subsurface drip irrigation– Safer
• Non-aerosolizing of water and pathogens
– More prone to clogging• Requires more maintenance
– More efficient• Less evaporative water loss
• Feeds roots of plants/grass directly
• Toilet flushing
S t o r m w a t e r in t o c r e e k s ,
r i v e r s & b a y s
3 0 0 k L
7 0 k L
1 0 0 k L
W a t e r i n e f f i c i e n t W a t e r e f f i c i e n t
1 5 0 k L
3 0 0 k L
2 ,0 0 0 L
1 0 0 %
8 0 k L
1 0 0 %
S e w a g e t r e a t m e n t
p la n t
• WaterWater– Supply, Renewal and Use– Too little Water– Dams and Reservoirs– Transferring water– Groundwater and Saltwater– Efficiency
–Too Much WaterToo Much Water
• Water Pollution
FloodingFlooding
Too Much Water: FloodsToo Much Water: Floods
Natural phenomenaNatural phenomena
Floodplain
Levee Floodwall
Dam
Reservoir
Renew and replenishRenew and replenish
Aggravated by human activities
Aggravated by human activities
Water LawWater Law• Riparian Rights (Sharing)
– from English Common Law
– applies to surface waters
– owner of waterfront land to use amounts correlated with other riparian owners.
– Works well in areas with water surplus
• Prior Appropriation (1st come, first served)– from Spanish law
– no preference given to those adjoining water course
– water rights based on use; earliest has rights
– use protected as long as it is continuous and “reasonable”
Water PollutionWater PollutionChapters 13 and 20Chapters 13 and 20
Living in the EnvironmentLiving in the Environment, 11, 11thth Edition, Miller Edition, Miller
Advanced Placement Environmental ScienceLa Canada High School
Dr. E
Water Quality DefinitionsWater Quality Definitions
ContaminantsPollutants
Contaminants
isis.csuhayward.edu/alss/Geography/ mlee/geog4350/4350c4f01.ppt
Water PollutionWater Pollution• Any chemical, biological and physical Any chemical, biological and physical
change in water quality that has a harmful change in water quality that has a harmful effect on living organisms or makes it effect on living organisms or makes it unusable for agricultureunusable for agriculture
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
• Types and Sources of Types and Sources of PollutionPollution
• Pollution of Streams and Lakes
• Ocean Pollution
• Groundwater Pollution
• Drinking Water Quality
• Waste Water Treatment
• Water Legislation
•Point sources (e.g., factories, sewage treatment plants, mines, oil wells, oil tankers)
•Nonpoint sources (e.g., acid deposition, substances picked up in runoff, seepage into groundwater)
•Agriculture is largest source of water pollution in the U.S. (64% of pollutants into streams and 57% of pollutants entering lakes)
Sources Sources of Pollutionof Pollution
© Brooks/Cole Publishing Company / ITP
Types of Pollution• Disease-causing Agents – pathogens
• Oxygen Demanding Agents – organic waste: manure
• Water-soluble Inorganic Chemicals – acids, toxic metals
• Inorganic Plant Nutrients – nitrogen and phosphorus
• Organic Chemicals – oil, pesticides, detergents
• Sediment or Suspended Material – erosion, soil
• Water-soluble Radioactive Isotopes – radon uranium
• Heat – electric and nuclear power plants
• Genetic Pollution
Waterborne BacteriaWaterborne Bacteria
Escherichia coliEscherichia coli Vibrio sp.Vibrio sp.Barbara E. Moore, Ph.D., Department of Biology, University of Texas at San Antonio
• Disease symptoms usually are explosive Disease symptoms usually are explosive emissions from either end of the digestive emissions from either end of the digestive tracttract
Waterborne Protozoans
Giardia sp.**P. Darben
Barbara E. Moore, Ph.D., Department of Biology, University of Texas at San Antonio
• Disease symptoms are usually explosive emissions from either end of the digestive tract
Waterborne Human Viruses
Hepatitis A virus Hepatitis E virus
Norwalk virus* Rotavirus**F. Williams
Barbara E. Moore, Ph.D., Department of Biology, University of Texas at San Antonio
Dracunculiasis
Water and Sanitation – Critical Elements in Development - Mike Lee CSU @ Hayward
http://www.pmeh.uiowa.edu/fuortes/63111/GUINEA/
The Guinea The Guinea Worm grows Worm grows
down the leg and down the leg and its sex organs its sex organs appear at the appear at the
ankle or on the ankle or on the foot usually, foot usually,
bursting when it bursting when it senses water, senses water, releasing ova.releasing ova.
Water and Sanitation – Critical Elements in Development - Mike Lee CSU @ Hayward
• No vaccine for Guinea worm is available.
• People do not seem to build up any resistance and the disease can be reinfected over and over.
• No research is being conducted for any vaccine or cure.
• Worms are removed slowly each day by winding around a stick.
http://www.pmeh.uiowa.edu/fuortes/63111/GUINEA/Water and Sanitation – Critical Elements in Development - Mike Lee CSU @ Hayward
Types and Sources of Pollution• Disease-causing Agents - Pathogens
• Oxygen Demanding AgentsOxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat• Genetic Pollution
Fish DieFish Die
BOD and Oxygen Sag CurveBOD and Oxygen Sag Curve
All streams have some capability to degrade organic waste. Problems occur when stream is overloaded with biochemical oxygen-demanding waste.
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents
• Water-soluble Inorganic ChemicalsWater-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat• Genetic Pollution
Heavy MetalsHeavy Metals
• Metallic elements having a density Metallic elements having a density greater than 5 g/cmgreater than 5 g/cm33
• Most are extremely toxicMost are extremely toxic
Heavy Metals by Dr. Jena Hamra
Acid RainAcid Rain• Broad term used to describe several Broad term used to describe several
ways that acids fall out of the ways that acids fall out of the atmosphereatmosphere
http://www.pacificnet.net/http://www.pacificnet.net/~fastoso/sm_acid.jpg~fastoso/sm_acid.jpg
Dr. Harvey F. Thomas @ Illinois State University
Wet and Dry Acid RainWet and Dry Acid Rain
• Wet deposition refers to acidic rain, fog, Wet deposition refers to acidic rain, fog, and snow. and snow.
• Dry deposition refers to acidic gases and Dry deposition refers to acidic gases and particles.particles.
Causes of Causes of Acid RainAcid Rain
• Sulfur dioxide (SOSulfur dioxide (SO22) and nitrogen oxides (NO) and nitrogen oxides (NOxx) )
are the primary causes of acid rain. are the primary causes of acid rain.
• In the US, about 2/3 of all SOIn the US, about 2/3 of all SO22 and 1/4 of all NO and 1/4 of all NOxx
comes from electric power generation that relies comes from electric power generation that relies
on burning fossil fuels like coal.on burning fossil fuels like coal.
Buffering CapacityBuffering Capacity
• Acid rain primarily affects sensitive bodies Acid rain primarily affects sensitive bodies of water, which are located in watersheds of water, which are located in watersheds whose soils have a limited “buffering whose soils have a limited “buffering capacity” capacity”
• Generally high in limestone depositsGenerally high in limestone deposits
Effects on WildlifeEffects on Wildlife• Generally, the young of most species are Generally, the young of most species are
more sensitive to environmental conditions more sensitive to environmental conditions than adultsthan adults
• At pH 5, most fish eggs cannot hatchAt pH 5, most fish eggs cannot hatch
• At lower pH levels, some adult fish dieAt lower pH levels, some adult fish die
• Some acid lakes Some acid lakes have no fishhave no fish
Nutrients
• Acidic water dissolves the nutrients and helpful minerals in the soil and then washes them away before trees and other plants can use them to grow.
• Releases Al+3 which is toxic to fish
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals
• Inorganic Plant NutrientsInorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat• Genetic Pollution
Selected Pollutants: NutrientsSelected Pollutants: NutrientsPhosphorus and nitrogen are the major concerns
Sources:•Human, animal (e.g., Hog Farms), and industrial waste •Storm water•Soil erosion •Excessive use of fertilizers for crops, lawns, and home gardens
Eutrophication
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients
• Organic ChemicalsOrganic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat• Genetic Pollution
concentrations increase at increasing levels in the food chain – PCBs, DDT, etc.
Biological MagnificationBiological Magnification
Fig. 12–20 © Brooks/Cole Publishing Company / ITP Water Resources and Water Pollution by Paul Rich
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals
• Sediment or Suspended MaterialSediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat• Genetic Pollution
Effects of Sediment LoadingEffects of Sediment Loading
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material
• Water-soluble Radioactive IsotopesWater-soluble Radioactive Isotopes• Heat• Genetic Pollution
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes
• HeatHeat• Genetic Pollution
Types and Sources of Pollution• Disease-causing Agents - Pathogens• Oxygen Demanding Agents• Water-soluble Inorganic Chemicals• Inorganic Plant Nutrients• Organic Chemicals• Sediment or Suspended Material• Water-soluble Radioactive Isotopes• Heat
• Genetic Pollution – Invasive SpeciesGenetic Pollution – Invasive Species
ZEBRA MUSSEL DISTRIBUTION
• Types and Sources of Pollution• Pollution of Streams and Pollution of Streams and
LakesLakes• Ocean Pollution• Groundwater Pollution• Drinking Water Quality• Waste Water Treatment• Water Legislation
flowing water can recover rapidly by dilution and decay
Pollution of Streams and LakesPollution of Streams and Lakes
© Brooks/Cole Publishing Company / ITP Water Resources and Water Pollution by Paul Rich
Accelerated results with human input of nutrients to a lake
EutrophicationEutrophication
© Brooks/Cole Publishing Company / ITP Water Resources and Water Pollution by Paul Rich
• Types and Sources of Pollution• Pollution of Streams and Lakes• Ocean PollutionOcean Pollution• Groundwater Pollution• Drinking Water Quality• Waste Water Treatment• Water Legislation
Ocean Pollution: PetroleumOcean Pollution: Petroleum
• Oil spills can Oil spills can be caused by:be caused by:– Tanker Tanker
accidentsaccidents– Intentional Intentional
dumpingdumping– Drilling/ Drilling/
pumping pumping operationsoperations
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
Ocean Pollution: Ocean Pollution: PetroleumPetroleum
• Petroleum is biodegradablePetroleum is biodegradable• Many pollution experts Many pollution experts
consider oil to be among consider oil to be among the least damaging ocean the least damaging ocean pollutantspollutants
• Data from the 1989 Data from the 1989 Exxon Exxon ValdezValdez oil spill shows the oil spill shows the recovery of key organismsrecovery of key organisms
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
Ocean Pollution: PetroleumOcean Pollution: Petroleum
Various Various processes act processes act to break up to break up and degrade and degrade oil in the oil in the ocean ocean environmentenvironment
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
• March 24, 1989, tanker in Prince William Sound, Alaska, worst oil spill in U.S. waters
• Coated 1,600 of shoreline, killed wildlife, and caused serious contamination
• Exxon spent $2.2 billion on direct cleanup + $1 billion fines and damages; another $5 billion being appealed
Case Study: Exxon Valdez Oil SpillCase Study: Exxon Valdez Oil Spill
© Brooks/Cole Publishing Company / ITP Water Resources and Water Pollution by Paul Rich
bss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt
http://www.google.com/imgres?imgurl=http://newsimg.bbc.co.uk/media/images/47791000/gif/_47791601_oil_spills466.gif&imgrefurl=http://news.bbc.co.uk/2/hi/8664684.stm&h=494&w=466&sz=21&tbnid=xBnM3fQZWoqnVM:&tbnh=84&tbnw=79&zoom=1&usg=__t6mq8hpGq6yVtY5Q8cz3m71vzfw=&docid=A8Xjm-zFkO-ddM&sa=X&ei=uvwHUZzyB8TJiwLdm4CADQ&ved=0CEUQ9QEwAw&dur=588
Ocean Pollution: Sewage SludgeOcean Pollution: Sewage Sludge
• Sewage sludge is the Sewage sludge is the semisolid material that semisolid material that remains after sewage remains after sewage treatmenttreatment
• Much sewage sludge Much sewage sludge was dumped offshore was dumped offshore until laws restricted until laws restricted sewage dumpingsewage dumping
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
Mercury and Minamata DiseaseMercury and Minamata Disease
• Mercury has many Mercury has many industrial uses but is industrial uses but is extremely toxic extremely toxic
• A chemical plant A chemical plant released large released large quantities of mercury quantities of mercury into Minamata Bay, into Minamata Bay, JapanJapan
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
Ocean Pollution: Non-Point Source
bss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt
Plastic in the Ocean Environment
bss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt
• Types and Sources of Pollution• Pollution of Streams and Lakes• Ocean Pollution• Groundwater PollutionGroundwater Pollution• Drinking Water Quality• Waste Water Treatment• Water Legislation
bss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt
75% of 175,000 known waste disposal sites in US may be producing hazardous subsurface plumes (contaminated regions of the subsurface)
• Types and Sources of Pollution
• Pollution of Streams and Lakes
• Ocean Pollution
• Groundwater Pollution
• Drinking Water QualityDrinking Water Quality• Waste Water Treatment
• Water Legislation
Municipal Water Purification PlantMunicipal Water Purification Plant
Coagulation Coagulation
• Rachel Casiday, Greg Noelken, and Regina Frey, Washington University (http://wunmr.wustl.edu/EduDev/LabTutorials/Water/PublicWaterSupply/PublicWaterSupply.html)
isis.csuhayward.edu/alss/Geography/ mlee/geog4350/4350c4f01.ppt
Sedimentation Sedimentation
• Rachel Casiday, Greg Noelken, and Regina Frey, Washington University (http://wunmr.wustl.edu/EduDev/LabTutorials/Water/PublicWaterSupply/PublicWaterSupply.html)
isis.csuhayward.edu/alss/Geography/ mlee/geog4350/4350c4f01.ppt
Filtration Filtration
• Rachel Casiday, Greg Noelken, and Regina Frey, Washington University (http://wunmr.wustl.edu/EduDev/LabTutorials/Water/PublicWaterSupply/PublicWaterSupply.html)isis.csuhayward.edu/alss/Geography/ mlee/geog4350/4350c4f01.ppt
AdsorptionAdsorption
• Rachel Casiday, Greg Noelken, and Regina Frey, Washington University (http://wunmr.wustl.edu/EduDev/LabTutorials/Water/PublicWaterSupply/PublicWaterSupply.html)isis.csuhayward.edu/alss/Geography/ mlee/geog4350/4350c4f01.ppt
• Types and Sources of Pollution
• Pollution of Streams and Lakes
• Ocean Pollution
• Groundwater Pollution
• Drinking Water Quality
• Waste Water TreatmentWaste Water Treatment• Water Legislation
Septic TanksSeptic Tanks• Approx. 22 million systems in operation ( 30% of US Approx. 22 million systems in operation ( 30% of US
population)population)• Suitability determined by soil type, depth to water table, depth Suitability determined by soil type, depth to water table, depth
to bedrock and topographyto bedrock and topography• Commonly fail due to poor soil drainageCommonly fail due to poor soil drainage• Potential contaminants: bacteria, heavy metals, nutrients, Potential contaminants: bacteria, heavy metals, nutrients,
synthetic organic chemicals (e.g. benzene)synthetic organic chemicals (e.g. benzene)
• Types and Sources of Pollution
• Pollution of Streams and Lakes
• Ocean Pollution
• Groundwater Pollution
• Drinking Water Quality
• Waste Water Treatment
• Water LegislationWater Legislation
Legal Attempts to Control Water Legal Attempts to Control Water PollutionPollution
1.1. Clean Water Act 1977, now a state-federal partnershipClean Water Act 1977, now a state-federal partnership2.2. The Porter-Cologne Water Quality Control Act 1987The Porter-Cologne Water Quality Control Act 19873.3. Federal Water Pollution Control Act 1972 amended to Federal Water Pollution Control Act 1972 amended to
create:create:4.4. Safe Drinking Water Act, 1974, amended 1996Safe Drinking Water Act, 1974, amended 19965.5. London Dumping Convention (1975) is the international London Dumping Convention (1975) is the international
treaty regulating disposal of wastes generated by normal treaty regulating disposal of wastes generated by normal operation of vessels operation of vessels
6.6. MARPOL 73/78 is implemented in the U.S. by the Act to MARPOL 73/78 is implemented in the U.S. by the Act to Prevent Pollution from Ships, under the lead of the U.S. Prevent Pollution from Ships, under the lead of the U.S. Coast Guard Coast Guard
bss.sfsu.edu/ehines/geog600/ Freshwater%20andbss.sfsu.edu/ehines/geog600/ Freshwater%20and%20ocean%20Pollution.ppt%20ocean%20Pollution.ppt
Clean Water ActClean Water Act
• The Clean Water Act is a 1977 amendment to the Federal The Clean Water Act is a 1977 amendment to the Federal Water Pollution Control Act of 1972Water Pollution Control Act of 1972– Set the basic structure for regulating discharges of pollutants in Set the basic structure for regulating discharges of pollutants in
the USthe US
• The law gave EPA the authority to set water quality The law gave EPA the authority to set water quality standards for industry and for all contaminants in surface standards for industry and for all contaminants in surface waterswaters
• The CWA makes it unlawful for any person to discharge The CWA makes it unlawful for any person to discharge any pollutant from a point source into navigable waters any pollutant from a point source into navigable waters unless a permit (NPDES) is obtainedunless a permit (NPDES) is obtained
• The amounts and types of pollutants than can be The amounts and types of pollutants than can be discharged or allowed to run in to waters from watersheds discharged or allowed to run in to waters from watersheds are regulatedare regulated
Environmental Science ENSC 2800 - Environmental Science ENSC 2800 - Pollution in the Bay-DeltaPollution in the Bay-Delta
Safe Drinking Water ActSafe Drinking Water Act• The Safe Drinking Water Act (1974) was The Safe Drinking Water Act (1974) was
established to protect the quality of established to protect the quality of drinking water in the U.Sdrinking water in the U.S
• This law focuses on all waters actually or This law focuses on all waters actually or potentially designed for drinking use, potentially designed for drinking use, whether from above ground or whether from above ground or underground sourcesunderground sources
Environmental Science ENSC 2800 - Environmental Science ENSC 2800 - Pollution in the Bay-DeltaPollution in the Bay-Delta