Utilisation of waters and protection of waters from pollution

NOTES ON METHODOLOGY

Sources and methods of data collection

Data on the utilisation and protection of waters from pollution are collected by the reporting on the web form Annual Report on the Utilisation of Waters and Protection of Waters from Pollution (VOD-1 form).

Coverage

Reporting units are all business entities and parts thereof registered in the Statistical Business Register and other administrative sources. The coverage includes all statistical units that used more than 1 000 m³ water on the basis of available data, which are classified into the NKD 2007. activity sections B Mining and quarrying, C Manufacturing and D Electricity, gas, steam and air conditioning supply.

The survey provides data on water supply, utilisation of water and discharging of waste water.

Notice

The data is harmonised with the requirements of the joint questionnaire of the OECD and Eurostat – JQ OECD/Eurostat – Inland water questionnaire and part of the data are not comparable with the previous database.

Definitions

Water supply includes the total volume of water used by business entities to supply themselves either from own water intake structures or from public water supply system. The volume of water used is determined by a water meter, or otherwise, it is estimated either according to standards for a particular activity or according to the project documentation.

Water utilisation includes the total volume of water used by reporting units for the production activity in the reference year. This water is used in technological processes (consumed water), in the process of cooling (evaporated water), for sanitary and other purposes.

Discharged waste water includes water which is discharged after utilisation as treated or untreated water.

Water used for cooling, as well as waters used by hydropower plants, are excluded from discharged utilised water since they are not considered waste water.

Abbreviations
m^3	cubic meter
NKD 2007.	National Classification of Activities, 2007 version
OECD	Organisation for Economic Co-operation and Development
'000	thousand