QUALITY WATER IN BOGDANKA STREAM

The paper concerns with water quality of Bogdanka Stream and its reservoirs, which flow trough it, during vegetation period of 2011-2012. The water samples for physico-chemical analysis were collected from seven control points and analyzed for: O2, BOD5, COD, pH, EC, N-NO3, N-NH4 and PO43-. Results obtained showed that water quality in the upper-course of Bogdanka was better than in the lower-course – bellow Rusałka and Staw Sołacki Lakes. Some parameters such as: COD, BOD5 and PO43- exceeded threshold values for second class and classified water as below good.