Water quality

Drinking water quality control

Water quality map

 

Drinking water quality control

Drinking water quality controll is performed by the Drinking Water Laboratory. The Laboratory, which was established in 1955 and reconstructed in 2003, is certified to carry out microbiological, physical and chemical investigations of drinking water. The Laboratory performs more than 20 thousand laboratory tests per year. At present, Lithuania applies the requirements for water quality and programme monitoring specified in HN 24:2003 “Requirements for Safety and Quality of Drinking Water”. According to this standard, over 80 sample compounds have to be identified. Though groundwater is protected from the external pollution, intense human activities constantly pollute the environment and create conditions for harmful substances to get into water. Nearly all the elements, which are present in water, are necessary for the human organism, however, their excess leads to different functional troubles and diseases. Therefore, concentrations of these substances are strictly limited.

The supplied water is safe and of a high quality, it does not exceed marginal and specified indicators, complies with the requirements of hygienic norm HN 24:2003 and EU Council Directive 98/83/EC „On the quality of water intended for human consumption“. At the moment the drinking water supplied by UAB Vilniaus Vandenys is disinfected by natrium hypochlorite solution. This disinfection method is not dangerous for the environment and human health. 

The drinking water should comply following requirements:
•  No pathogenic microorganisms, viruses and protozoa in water
•  Water should have good organoleptic (taste, odour, clarity etc.) features.
•  Amounts of toxic substances and salt should be under allowable safe norms.
 
The main chemical indicators of  drinking water: