The EU requires that established bathing waters in Europe be assessed for quality in two to four-week rhythm must be examined. The Leipzig City Health Department performs this for Lake Cospuden. The water is tested for microbiological parameters in accordance with the Saxon Bathing Water Ordinance. These include intestinal enterococci, E. coli, visibility, temperature, pH, and, if the water becomes cloudy, microscopic tests are performed for cyanobacteria.
As a result, Lake Cospuden is a very good bathing water, We have very clear and clean water, the pH value is 7,8 - 8,1.