In this thesis the pool system has been designed, while the corresponding equipment has been selected required for sanitary and thermal preparation of pool water, including the circulation in the outdoor pool with the so-called. "Finnish" topping. The selected pool is nonswimming, having an area of A = 50 m 2 , and an average depth of H = 1.35 m. For heating pool water, and for cooling it in the summer, a heat pump is provided. The heat losses of the pool water considered include evaporation from the water surface, transmission losses through the walls of the pool shell, and the need for adding fresh water. The temperature regime of the pool water was selected within the range of 24-28°C. The designing complied with the necessary measures prescribed according to the "Ordinance on sanitary and hygienic conditions of swimming pools and on the health safety of pool waters" (OG 59/20), and according to DIN 19643. Selected elements of the pool system are connected by a pipe network into a functional unit, and presented in the draft documentation.