Using technology that mimics nature, we can build “Natural Swimming Pools” (NSPs) as an alternative to the traditional sterilized pool. Developed extensively in Germany, NSPs require no chemicals to effectively maintain high water quality. The key is an area called the regeneration zone, in which aquatic plants are rooted hydroponically in gravel beds. In one multi-unit housing complex called Tanzi, in Mauritius, Africa, we proved the viability of creating a community pool and series of smaller pools all connected by a shared regeneration zone. A community swimming pool can be constructed inexpensively, using local labor and local aquatic plants. It then requires no chemicals and little energy consumption. The concept has been proven at many scales and in many climates worldwide.