Evaluation of water in the southern part of Legiński Lake and its usefulness for recreation was carried out on the basis of the following criteria: Kohl 1975 and Kavka 1987 in Albinger's modification; U.S Department of Interior, Federal Water Pollution Control Administration; European Committeee for the Quality of Water for Bathing Purposes. Research work aimed at determining the number of bacteria indicatory of pollution (Total Viable Count 200°C) and sanitary state (FC and FS). Samples of water and bottom sediments were examined at three different sites. The results revealed that water in the southern part of Legiński Lake can be used for recreational purposes. The majority of samples examined was classified as clean or little polluted. A higher degree of water loading was found only at the outlet of the stream coming from biological ponds of the local water-treatment plant.