The indoor pool measuring 25 x 10 m has a water depth of 90 to 160 cm, with a pleasant water temperature constantly kept at 29.5 - 30 °C. It is used by students during P.E. classes, as well as for swimming courses and recreational swimming during the afternoon and in the evening. The latest addition is the new whirlpool and kiddy pool. The water is kept at very high quality by filtering with ultrafiltration (without any bacteria).