The swimming pool with overflow rim is recommended primarily for sports facilities, resorts, hotels and aqua-parks, because of a large loss of water caused by splashing. An overflow rim is a “grating”, which can be seen in the objects mentioned above. Its task, like in the case of the skimmer, is to collect impurities from the water surface. This technology is more complicated than skimmer technology. The rim is mounted on the edge of the pool, and the water that is overflowing, goes directly into the rim, which is covered with a “grating”. Then the water is collected in the overflow tank and when a given level is reached, water is sucked in by the pump. In the filter, purification process occurs, then the water is pushed out into the pool via nozzles.