Urban water census (S)

Reference period  
Year:
2015

General characteristics  
Contents:
Urban water supply chain; Urban water services management
Analysis units:
Water management companies; Drinking water abstraction sources; Urban wastewater treatment plants; Public water supply networks; Sewerage networks
Periodicity:
Occasional
EU legislation:
No

Survey design  
Type:
Census

Data collection  
Reporting units:
Water management companies
Data collection mode:
Self-administered data collection via electronic transmission
Total units:
3132
Respondents:
2715

Quality  
Prevention, monitoring and evaluation of unit nonresponse:
Initiatives to foster survey participation; Follow-ups of nonrespondent units/bodies
Item nonresponse and measurement error treatment:
Adjustement methods to reduce the effects of measurement and partial nonresponse errors; Recontact of the units; Questionnaire testing
Validation:
Coherence control with data from other surveys or sources; Coherence control with previous data of the same survey; Coherence control among indicators of different analysis units of the same survey; Control of influential unit data, strongly contributing to computation of aggregates

Data dissemination  
Istat data bases:
I.Stat
Other data bases:
Aquastat (FAO) - Food and Agriculture Organization of the United Nations (FAO); Banca dati Eurostat - Eurostat (Statistical office of the European Union); Database OCSE - Organisation for Economic Co-operation and Development (Oecd); Urban audit - Eurostat (Statistical office of the European Union)
Press releases:
Water census; World water day: Istat water statistics; Giornata mondiale dell'acqua: le statistiche dell'Istat
Timeliness of provisional data:
10 months and 28 days
Timeliness of final data:
1 year, 2 months and 22 days