Survey on drinking water supply

Statistical Office of the Republic of Serbia

Environmental statistics unit

Neda Cukavac

Senior statistician

Milana Rakića 5, Belgrade

neda.cukavac@stat.gov.rs

+381 113290242

Survey on drinking water supply provides data which are classified into three topics:

• Water abstraction, overtaken water from other networks and water provided to other systems;

• Water distributed to users: sold water (to households, business entities dealing with the sections

of Agriculture, forestry and fishing, Mining and quarrying, Manufacturing and Electricity, gas,

steam and air conditioning supply, Water supply; sewerage, waste management and remediation

activities, Construction as well as to other consumers, water used for own consumption, and total

water losses;

• Data on water treatment, water supply network and costs of drinking water production.

Code list of watercourses

Classification of Activities (CA – 2010, “Official Gazette of RS”, No 54/10)

Regulation on Nomenclature of Statistical territorial Units (“Official Gazette of RS”, No 109/09 and 46/10)

Surveys includes according to Classification of Activities (CA 2010) divisions: 36 – water collection, treatment and supply and division 84 – Public administration and defence, compulsory social security (local communities’ authorities managing water supply systems).

Public water supply is a system for drinking water supply, having arranged and protected source, abstraction, reservoir and water network and presents a set of connected hydro-technical components under singular management and control, used for water abstraction, collection, treatment and distribution to consumers.

Water abstraction (sources) refers to all the places of public underground or surface waters from which water supply systems are supplied (underground, surface waters, spring waters, watercourses, accumulations and lakes).

Distributed water relates to all directly abstracted and supplied water distributed by the water supply system during the reference year to its consumers. The quantities of distributed water are measured by water gauge or, where they are not available, quantities are calculated according to norms relative to a selected activity group.

Drinking water is water used for drinking, processing and production of food and general use items, as well as for other people’s needs. Water used or intended for drinking must not contain elements harmful for human’s health above the determined limits and regarding physical, chemical, biological, bacteriological, virological and radiological features, it has to satisfy the established conditions.

Statistical units are local units and enteties who in the reference year are classified according to Classification of Activities (CA 2010) in divisions: 36 – water collection, treatment and supply and 84 – Public administration and defence, compulsory social security (local communities’ authorities managing water supply systems).

Surveys covers observation units which abstract and disribute drinking water on the whole territory of the Republic of Serbia. 

The data are representative for the territory of the Republic of Serbia, to level of municipalities. 

Starting from 1999 the Statistical Office of the Republic of Serbia has not at disposal and may not provide available certain data relative to AP Kosovo and Metohija and therefore these data are not included in the coverage for the Republic of Serbia (total).

2000-2016

Not applicable.

Mil. m³, km, number

Calendar year.

The survey is conducted on the basis of the Law on Official Statistics ("Official Gazette of the Republic of Serbia" No. 104/09), according to the Plan and Program of Statistical Surveys and according to requirements of „JQ OECD/ Eurostat“(JQ OECD/Eurostat – Inland water), questionnaire for Inland Water and questionnaire UNSD/UNEP – Environmental Statistics (UNSD/UNEP – Environmental statistics

Data are sended to Eurostat every second year, and these data are published in Eurostat´s data base. 

Law on Official Statistics („Official Gazette of RS“, No 104/2009), chapter IX

Data are published at the aggregated level.

Notification about dissemination of statistical data are published in Publication calendar which is available on web site.

http://webrzs.stat.gov.rs/WebSite/Public/CalendarView.aspx?pKey=37&cType=1

All users have been granted an equal access to official statistics: this means that the dissemination dates of official statistics have to be announced in advance and no user can have access to the official statistics (results of official statistical surveys) before other users. Statistical information is first published in Statistical Release. Official statistics are available on the website on the date announced in the release calendar.

Annual.

Not applicable.

• Statistics Yearbook
• Statistical Pocket-book
• Eco-bulletin
• Statistical Release Drinking water supply
• Municipalities and regions of the Republic of Serbia 
• Website: www.stat.gov.rs

The data are available in the database of the Statistical Office of the Republic of Serbia, Division Environment, the subdivision Water.

Not applicable.

Not applicable.

On the web site of the Statistical Office of the Republic of Seriba short methodology is available for Survey on drinking water supply. 

SORS describe the sources and methods in the quality report and metadata. A summary of the quality information аt the country level is available on SORS web page (QMC- quality management system).

The Quality Policy document is available on the SORS website:

http://www.stat.gov.rs/en-US/o-nama/sistem-upravljanja-kvalitetom

High.

The main users of the statistical surveys on Urban wastewater are:

- National users: Ministry of Agriculture and environmental protection, industrial and business associations, environmental associations, NGO's, local municipalities.

- International users: Eurostat, UN, European Agency for environmental protection.

User satisfaction is not conducted yet.

Not applicable.

The overall accuracy is good. Response rate of the survey on drinking water supply is 99%.

Not applicable.

Not applicable.

The data are available in the fifth month of the end of the reporting year.

Preliminary data are published in accordance with the deadline given in the Regulation on the Plan of official statistics. Final data are published in accordance with the terms announced in the Regulation on the Plan of official statistics and the Release Calendar.

The application of concepts and definitions from the methodology enables geographical comparability with the data of EU countries.

The time series has been available since 2000 without time brake.

Not applicable.

Not applicable.

Not applicable.

The audit policy is carried out in accordance with the General Policy of the Audit of the Statistical Office of the Republic of Serbia (Chapter 3 - Audit Policy).

The published data should be regarded as final, unless otherwise stated. Corrections and revisions might occur.

Тhe source of data is a statistical survey on drinking water supply.

A methodological instrument which is used for carrying out the survey: Questionnaire - Annual survey on drinking water supply (VOD-2v).

Data are collected annualy. 

Data collection is done by the reporting method, meaning that the reporting unit uses its available documentation and records to fill in the paper or web questionnaires. The competent person enters the requested data in the first quarter of the current year for the previous year. If related records are non-existent for certain data, competent persons will make an evaluation. The reporting unit forwards the questionnaire to the relevant statistical authority on which territory its head office is located within the deadline set up in the annual plan.

Validation of data is done during the entire data processing from input to final results.

Not applicable.

Not applicable.