A large hole in the ground that is made and filled with water for swimming or other aquatic activities. According to Webster’s New World College Dictionary, 4th Edition, a pool can also be defined as “a vessel for carrying on the game of swimming.”
A pool is usually located in a separate building, known as a natatorium, and may include facilities for related aquatic activities such as diving tanks. Many upscale hotels and vacation resorts have pools. Public pools vary in size and shape, with some containing features such as artificial waterfalls, fountains, splash pads, wave machines, varying depths of water, bridges, island bars, and grottoes.
Many public and private pools are rectangular, but there are freeform designs as well. Most are 25 meters (82 ft) long, but competition pools are generally longer and designed to meet the international regulations of the Federation Internationale de la Natation, or FINA. These regulations govern the size and shape of competition pools, but also set standards for water temperature, lighting and officiating equipment.
Swimming pools are disinfected with chlorine, which sanitizes the water and kills bacteria such as Escherichia coli. The chlorine causes stinging eyes and the familiar pool odor, but it allows people to swim in safe, clean water. In addition to chlorine, the water is often treated with other chemicals that control pH, total alkalinity and calcium hardness.
Swimming pools require regular maintenance, so consider your budget and available space before deciding which type to build. A professional pool contractor can help you evaluate your options. Depending on where you live and the cost of labor, the construction and maintenance costs of different types of pools can differ widely.
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