Survey on drinking water supply

Period: Annual
Year: 2016

01. Contact
02. Metadata update
03. Statistical presentation
04. Unit of measure
05. Reference Period
06. Institutional Mandate
07. Confidentiality
08. Release policy
09. Frequency of dissemination
10. Accessibility and clarity
11. Quality management
12. Relevance
13. Accuracy and reliability
14. Timeliness and punctuality
15. Coherence and comparability
16. Cost and Burden
17. Data revision
18. Statistical processing
19. Comment

01. ContactTop
01.1. Contact organisation

Statistical Office of the Republic of Serbia

01.2. Contact organisation unit

Environmental statistics unit

01.3. Contact name

Neda Cukavac

01.4. Contact person function

Senior statistician

01.5. Contact mail address

Milana Rakića 5, Belgrade

01.6. Contact email address

01.7. Contact phone number

+381 113290242

02. Metadata updateTop
02.1. Metadata last certified
02.2. Metadata last posted
02.3. Metadata last update

03. Statistical presentationTop
03.1. Data description

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.



03.2. Classification system

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)

03.3. Coverage - sector

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).

03.4. Statistical concepts and definitions

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.


03.5. Statistical unit

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).

03.6. Statistical population

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

03.7. Reference area

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).

03.8. Coverage - Time


03.9. Base period

Not applicable.

04. Unit of measureTop
04. Unit of measure

Mil. m3, km, number

05. Reference PeriodTop
05. Reference Period

Calendar year.

06. Institutional MandateTop
06.1. Institutional Mandate - legal acts and other agreements

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

06.2. Institutional Mandate - data sharing

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

07. Confidentiality Top
07.1. Confidentiality - policy

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

07.2. Confidentiality - data treatment

Data are published at the aggregated level.

08. Release policyTop
08.1. Release calendar

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

08.2. Release calendar access

08.3. Release policy - user access

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.

09. Frequency of disseminationTop
09. Frequency of dissemination


10. Accessibility and clarityTop
10.1. Dissemination format - News release

Not applicable.

10.2. Dissemination format - Publications
  • Statistics Yearbook
  • Statistical Pocket-book
  • Eco-bulletin
  • Statistical Release Drinking water supply
  • Municipalities and regions of the Republic of Serbia 
  • Website:
10.3. Dissemination format - online database

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

10.4. Dissemination format - microdata access

Not applicable.

10.5. Dissemination format - other

Not applicable.

10.6. Documentation on methodology

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

10.7. Quality management - documentation

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).

11. Quality managementTop
11.1. Quality assurance

The Quality Policy document is available on the SORS website:

11.2. Quality management - assessment


12. Relevance Top
12.1. User needs

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.

12.2. User satisfaction

User satisfaction is not conducted yet.

12.3. Completeness

Not applicable.

13. Accuracy and reliabilityTop
13.1. Overall accuracy

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

13.2. Sampling error

Not applicable.

13.3. Non-sampling error and

Not applicable.

14. Timeliness and punctualityTop
14.1. Timeliness

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

14.2. Punctuality

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.

15. Coherence and comparabilityTop
15.1. Comparability - geographical

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

15.2. Comparability - over time

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

15.3. Coherence - cross domain

Not applicable.

15.4. Coherence - internal

Not applicable.

16. Cost and BurdenTop
16. Cost and Burden

Not applicable.

17. Data revisionTop
17.1. Data revision - policy

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).

17.2. Data revision - practice

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

18. Statistical processingTop
18.1. Source data

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).

18.2. Frequency of data collection

Data are collected annualy. 

18.3. Data collection

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.

18.4. Data validation

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

18.5. Data compilation

Not applicable.

18.6. Adjustment

Not applicable.

19. CommentTop