Swimming pools are artificial bodies of water typically found outdoors or indoors, designed for the purpose of swimming, recreational activities, aqua therapy, and water sports. They come in various shapes, sizes, and depths, and are usually filled with treated water to maintain cleanliness and safety for users. Swimming pools may be found in private residences, public parks, hotels, resorts, and fitness centers. Research in this area may focus on pool design and construction, water quality and treatment methods, health and safety regulations, recreational activities and programs, and the environmental impact of swimming pools.