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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!