This paper presents the results of investigation of water quality of the Drwinka river. The water stream flows through the test areas with different land development. An upper reaches flows through industrial and urban area, followed by land with the buildings used for agricultural and rural settlement areas the Niepołomice Forest. Then it flows through areas with rural buildings. In order to determine water quality indicators content of nitrogen, phosphorus, potassium, sodium, calcium, magnesium, sulfate, chloride, suspended solids, pH, conductivity and dissolved solids was studied in six selected areas of research. Water samples were collected at monthly intervals in the years 2009 and 2010. The results can be used in land use planning serving the catchment areas to reduce pollution entering the Drwinka river.

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