2007-10-091 Statistics of the Environment Sub-Group Water Tuesday, 9 October 2007 3.4 Sweden: Water for services (and some comments on irrigation)

2007-10-09 1

Statistics of the EnvironmentSub-Group Water

• Tuesday, 9 October 2007

• 3.4 Sweden: Water for services (and some comments on irrigation)

2007-10-09 2

Statistics Sweden produce statistics on water

use by governmental appropriation

• Water use for Services

• Municipal water supply

• Water use for Households

• Water use for Industry

• Water use for Agriculture

• Total water use

Water for Services

IntroductionIntroduction

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Water for Services

BackgroundBackground

2004

• First ever estimation of the water use in service sector in Sweden.

• A methodology study on collecting data on water use for private and public services outside urban areas.

• Data from 2003

• Water use estimates by type of service

• Registers of real estates taxation, businesses

and service as data source

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Water for Services

ResultsResults 2004 2004

• Total water volume used in the service sector was estimated to 28 million m3 per year.

• Stands for just less than 1% of total water use in Sweden per year.

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Water for Services

Results 2004Results 2004

• Most extensive water users (70 % of total water use in service sector outside urban areas)

Golf courses (water for irrigation)

Ski resorts (snow guns for snowmaking)

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Water for Services Advanced study (Eurostat Grants) (Eurostat Grants)

Tasks:

• Define and identify golf courses and ski resorts plus hotels and restaurants that are connected to the facilities.

• Design a questionnaire and carry out a survey aimed at collecting data on water abstraction and type of water use.

• The results will greatly improve water use statistics of the service sector and the methodology can be of value in other European countries.

• Final report: February 2008

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Water for Services Advanced studyDefine and identify ski resortsDefine and identify ski resorts

• 235 ski resorts in Sweden

• All members in Swedish lift

association (SLAO).

Comments:

About 40 facilities according to

Business register of Sweden (FDB)

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SE1 – 33

SE3 – 157

SE2 – 45

Ski resorts per NUTS1

Water for Services Advanced studyDefine and identify ski resortsDefine and identify ski resorts

• Geo-coding of 235 ski resorts using postal codes

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Visitors per year

Water for Services Advanced studyDefine and identify ski resortsDefine and identify ski resorts

• Sorted by number of visitors per year.

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• Sample of approximately 100 ski resorts

• Peak period for using snow-guns is October until December.

Water for Services Advanced studyDefine and identify ski resortsDefine and identify ski resorts

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• In total 445 golf clubs

• Members of Swedish Golf federation

Comments

Only 309 facilities in Business

Register of Sweden (FDB)

Water for Services Advanced studyDefine and identify golf coursesDefine and identify golf courses

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• Golf clubs sorted by size of facility according to number of courses and number of holes

Water for Services Advanced studyDefine and identify golf coursesDefine and identify golf courses

9182736

100266 57 22

Holes CoursesNumber of Number of

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• Sample of approximately 120 golf courses

• Golf season is normally seven months, May until November.

Water for Services Advanced studyDefine and identify golf coursesDefine and identify golf courses

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Water for Services Advanced study Questionnaire and surveyQuestionnaire and survey

The questionnaire will collect the following data:

• Water volumes during the last season, split up into ground and surface water.

• Is the water supply managed by the municipality or is it an own source (well, irrigation pond, water dam etc).

• Is the water volume used measured with some sort of instrument or estimated.

• Are there any restaurants, camping sites etc closely connected to the facility

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Water for Services Advanced study Questionnaire and surveyQuestionnaire and survey

• The survey is designed in a general way to fit both kind of services.

• The questionnaire is designed to be rather easy to fill in.

• It will be sent out in paper form, but there is a possibility to answer in a digital form as well.

• The questionnaire will be distributed during October 2007.

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Water use in agriculture

Agriculture stands for 4% of the total water use in Sweden:

• livestock (1%) • irrigation (3%)

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Irrigation

1985: Full-scale survey to the farmers

• time consuming

• expensive

• high response burden

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Survey on water use for irrigation in agriculture (Eurostat Grants)

Tasks:

1. Carry out a survey to a small sample of large holdings asking for irrigated area per crop.

2. Calculate used water volumes for each holding in the survey, using water need coefficients.

3. Use an indirect method, for example "Linear estimation“ or some other form of regression analysis. The methods have showed good results in earlier studies.

Final report: summer 2008

2007-10-09

Project plan

1.Survey to a small sample of holdings Data on irrigated area per crop

2. Calculate used water volumes for each holding in the survey

a = irrigated area/crop

c = water consumption coefficient

water use = a * c

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Project plan

3. Indirect method- linear estimation?

w = water use = the value obtained from step 2

i = total irrigated area (from the Farm Structure Survey, FSS)

To be calculated: d = constant

w = i * d

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Project plan

Calculate the water use, w, for all holdings

i and d = known variables

w = i * d

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New, indirect method– advantages

• Smaller sample

time- and money efficient

less response burden

• Results from the FSS (Farm Structure Survey ) are used

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Problem

FSS asks for data on irrigated area for the time period

June 2006-May2007- not calendar year.

How match this to our survey?

• Hard for the farmers to distinguish between May/June (when did they irrigate?)

• Do the farmers remember 2006?