“The planet’s water resources face an unprecedented threat“, says the United Nations on the occasion of the World Water Day, on March 22. “Currently, about 2.2 billion people do not have access to clean water and 4, 2 billion  live without adequate sanitation. The effects of climate change are expected to increase these numbers if we do not act urgently. By 2050, between 3.5 and 4.4 billion people will have limited access to water, of which more than a billion will live in cities“.

This situation makes it essential to put an end to all water polluting activities and installations. Biological pools, being nature based solutions, do not belong to these equipment harmful to the environment. The water in a biological pool has the same quality as the water in a natural, non-eutrophic lake, that is, with a very low content of nutrients such as nitrates or phosphorus.

The use of water in biological pools does not make the water useless for other purposes, because its quality is guaranteed by biological treatment. Thus, water from a biological pool could be used for irrigation purposes in the vegetable garden or garden without any negative effect on the environment. And even, in an emergency case, it could be used as water to produce drinking water.

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