This Decree, enacted on the basis of sections 11 and 16 of the Environmental Protection Act and section 36 of the Water Services Act, provides rules relative to the treatment and conducting of urban waste waters that require an environmental permit as specified in section 28 of the Environmental Protection Act. Waste water treatment requirements must be observed in the planning, construction and maintenance of waste water sewers, using the best available technology and considering in particular: a) the quantity and qualities of urban waste waters; b) the prevention of leakages; and c) restricting the pollution of water bodies as a consequence of overflow water. Waste waters shall be subject to secondary (biological) or an equivalent treatment and the treatment must comply with the requirements listed in Table 1 in the Annex to this Decree. The need for nitrogen removal from waste waters must be determined in the environmental permit application and decided in the environmental permit. A waste water treatment plant must be constructed so as to facilitate the taking of representative samples of incoming waste water, waste water under treatment and waste water being discharged into waterways.
Government Decree on Urban Waste Water Treatment (No. 888 of 2006).