The Steinsee is one of the warmest swimming lakes in Germany, reaching pleasant bathing temperatures of up to 26 degrees Celsius. It is one of the few lakes in Munich and the surrounding area with proven drinking water quality, making it a safe choice for environmentally sensitive individuals. The lake is fed by six springs, ensuring a constant supply of fresh water. The large sunbathing area can accommodate up to 5000 visitors, and there is a supervised swimming area for children. The lake offers clear water and ample space for play and sports.