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Ministry of Environment of the Republic of Lithuania
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Surface water and groundwater protection

Reduction of water pollution with hazardous substances

2007-12-22

 

Substances shall be hazardous if they pose a risk to or through the aquatic environment. Having reached the environment from articles or production processes, as a result of their characteristics these substances may have a negative impact on the ecosystem and subsequently on the people.

Lithuania has a sufficient legal framework in the field of the reduction of water pollution with hazardous substances. National legislation has been harmonised with the EU legal framework (national legislation regulating the discharge of hazardous substances is provided under National Legislation).

The discharge of wastewater containing priority hazardous substances and/or hazardous substances (except in cases provided by the legislation) into the natural environment (irrespective of the wastewater amount/rate of flow) is authorised only if the person holds the permit for the discharge of wastewater regulating the discharge of priority hazardous substances and/or hazardous substances.

Users of water and subscribing users of water who discharge wastewater containing priority hazardous substances and/or hazardous substances into the natural environment or to collecting systems must follow the requirements (MAC) established for the discharge of these substances. Maximum allowable concentrations (MAC) of priority hazardous substances are provided in Annex 1 to the Regulation on Wastewater Management . Maximum allowable concentrations (MAC) of hazardous substances and other controlled substances are provided in Annex 2 to the Regulation on Wastewater Management.

If industrial wastewater contaminated with priority hazardous substances stated in Annex 1 and/or hazardous substances stated in Part A of Annex 2 (when the concentration of hazardous substances is equal to or higher than the threshold concentration released into the environment stated in Part A of Annex 2) is discharged into the environment, programmes for the reduction of water pollution with these hazardous substances must be developed and implemented.

The programme for the reduction of water pollution must contain:

  • the list, quantities and mass balance of hazardous substances and/or priority hazardous substances used in economic activities and/or generated in the production process;

  • control measures and programme regarding the release of wastewater containing hazardous substances and/or priority hazardous substances;

  • measures for the reduction of water pollution, priority hazardous substances and/or hazardous substances. If possible, the programme should provide for a gradual termination of the pollution with priority hazardous substances and/or hazardous substances, or the replacement of these substances with less hazardous substances (the discharge of hazardous substances with wastewater or any other release into the environment must be reduced; water pollution with priority hazardous substances must be gradually terminated).


Minister of Environment of Lithuania Kęstutis Navickas
Minister of Environment of Lithuania Kęstutis Navickas