In this paper the guidance of location of soil absorption system for pre-treated wastewater in relation to water supplies specified in the Regulation of the Minister of Infrastructure dated 12 April 2002 on the technical conditions to be met by buildings and their location [Rozporządzenie… 2002] were analysed. The flow rate of well were calculated for the volume flow of complete well with free water table, of flowing complete well and of flowing well placed in the flow of groundwater. The flow times of pollutants from sources (household wastewater treatment plant) also were calculated and the degree of risk for groundwater reservoirs were determined. The results of calculations were presented on the graphs where for available data such as the value of the hydraulic conductivity, the water level in the well, the time of pollutant flow and well flow rate were estimated.

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