The Château de l'Epinay swimming pool is a natural swimming pool, for swimming without any chemicals or UV filters. The water is in permanent circulation, it is treated by plants and generates the harmonious development of fauna and flora.

You can sit on the deckchairs all around the pool: on the wooden terrace or without the fresh grass. You can order drinks and ice creams by the pool to enjoy it even more, to refresh yourself during the day and enjoy a magical moment in the late afternoon, between the field of birds and the soft sound of the water.

Our wish was that the Château's swimming pool could thus blend into the landscape and become a decoration pool in winter. In addition, more respectful of the environment and human health, natural swimming allows you to benefit from better quality water: no more red eyes and burns of the skin!



The operating principle of a natural swimming pool comes from a simple observation: a natural environment which is not too polluted can be purified thanks to its fauna and flora. The natural swimming pool is therefore a sustainable solution to benefit from a home swimming space without having to use chemicals. This virtuous circle is possible thanks to the association of volcanic rock in the filtration basin and plants below:

  • Purifying plants: these are the plants which play the role of natural filtration. Their action makes it possible to absorb the metals present in the water, responsible for the proliferation of algae (phnagmites, elodées, sedges etc.)
  • Oxygenating plants: as their name suggests, they bring oxygen to the water and thus promote the development of bacteria that want us good (pondweed, water milfoil, buttercup etc.)
  • Floating and decorative plants: they also make it possible to fight against the proliferation of algae because they hide the sun from algae, thus hampered in their development (ex: water lily)


Natural swimming is at all times a pleasant landscape element and the source of enriching observations of some beauties of the living world, whether flowers, dragonflies, birds, frogs, or bees and other insects. The goal is to maintain the balance of natural water cycles