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WATER AUTHORITYDr. Or Goldfarb

CENTRAL BUREAU of STATISTICSZaur Ibragimov

Water Accounts in IsraelVienna January 2009

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Recent Activities1.Construction of the Database

2.Definition of the final reports

3.Data collection and updates

4.Developing a software interface for data update

5.Standardization of collected data

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Principles of the Database Construction

• High resolution for variables, used for background calculation

• Definition of algorithms for variables’ calculation by industries, suppliers and user sectors

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Methodology for the Database Construction

Learning from:

• Research and other countries’ experiences

• Pilot of data collection

• Cooperation with colleagues from IT Department (CBS)

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Construction Of The Algorithms for the Final Reports

Supply and Use of Water in the Economy Table 1: Supply of distributed water and of

wastewater servicesTable 2: Use of distributed water and of

wastewater servicesTable 3: Economic accounts for water distribution

and wastewater collection industriesTable 5: Physical flows of water corresponding to

economic supply Table 6: Physical flows of water corresponding to

economic uses

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Construction Of The Algorithms for the Final Reports

Physical flows of water between the economy and the environment

Table 7: Abstractions of water

Table 8: Returns of water

Table 9: Freshwater balance

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Construction Of The Algorithms for the Final Reports

Physical flows of pollutants between the economy and the environment

Table 10: Pollutant loads of freshwater abstracted for self and public supply

Table 11: Pollutant loads of wastewater discharged to the sewage system

Table 12: Pollutant loads of cooling and wastewater returned to the environment

Table 13: Pollutant loads of cooling and wastewater returned to non-fresh sources

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Construction Of The Algorithms for the Final Reports

– SEEA physical use table

– SEEA physical supply table

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Construction Of The Algorithms for the Final Reports

Additional reports according to special users’ requests

• Use of water by suppliers and user sectors• Abstraction costs• Water prices• Data related to water consumption in

municipalities• Allocation and use of water in agriculture

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Data sources

– Water Authority• abstraction and use of water by source, types

and user sector• taxes paid by water abstractors

– CBS• Municipalities’ data regarding economic variables • Production data by industry• Various Coefficients for calculated variables• Survey in the water and water related industries

– Other government bureaus

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Data compilation: Related Activities

• Pre-test survey

• Update of the questionnaire according to the pre-test survey

• Survey in the water and water related industries

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Survey in the water and water related industries

• Sampling stratums :– water abstractors – reclamation plants – agricultural cooperatives – wastewater treatment plants – water and sewage corporations

• The CBS Business Register was used as a framework for sampling

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Technological system

• Developed software tools for updating the data– input forms for questionnaires– input forms for administrative files

• Monitoring system for the incoming data– data quality tests– cross-checking of data from different sources

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Technological system (continued)

• Survey control tool– monitoring establishments’ reporting status– connecting documents delivery directly to the

fax– updating of the data from different screens

and with other systems in CBS

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Technological System Screenshots

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Establishments

Survey Management Screen

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Contact Information Screen

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Correspondence History Screen

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Questionnaire

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Error Message

Questionnaire

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Challenges along the road

• Adjusting the questionnaire to establishments with various activities

• Cooperation from private establishments and government agencies

• Requests for additional reports from system users

• Methodology for calculation of new coefficients

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Thank you!