Natural swimming pool

This article is about the man-made, naturally-maintained chemical-free swimming pool. For other bodies of water also known as "natural swimming pool" or "natural pool", see Natural pool (disambiguation).

A natural swimming pool, also called eco pool or chemical-free pool, is a type of swimming pool that operates without an array of sanitation chemicals and that can be built with a minimum of materials. Common in Europe, this swimming pool type leans toward an ethos of building with nature and blending into the natural landscape around it and thus may use gravel stone and clay instead of concrete or fiberglass, and aquatic plants in a filtration area instead of chemicals and mechanically-complex filtration systems for pool sanitation.

The plants in a natural pool's filtration area planted hydroponically (placed no deeper than 30 cm.) create a low-cost maintenance system for the pool. A conventional pool's complex sanitation and filtration system would often cost its owner more than ten times the maintenance cost spent on a natural swimming pool. Additionally, a natural swimming pool requires only a small amount of management hours and does not require regular draining.

Apart from economic reasons, a natural swimming pool seeks to avoid chemicals such as chlorine that can ruin a pool user's eyes and skin, provide a natural aesthetic to a yard, or welcome more wildlife into a given environment, among other reasons.

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