Natural swimming pool: advantages, disadvantages, cost of construction


The natural swimming pool is a exceptional aquatic complex at the level aesthetic but also in terms of respect the environment. Let’s discover together what this extraordinary pool, which is also called biological pool, is more precisely, its many advantages and its few drawbacks that must also be taken into account when choosing between a classic pool and a natural pool. Finally, let’s see what budget to devote to such a project.

What is a natural swimming pool?

It’s about a biological swimming pool, very different from the classic swimming pool since it is composed of three distinct zones, namely:

  • A oxygenation zone or regeneration zone: we install “oxygenating” aquatic plants, essential for the balance of the swimming pool, a fountain or even a waterfall. This shallow environment is a real ecosystem essential for water maintenance and the fight against algae.
  • A lagoon area: reserved for filtration, it is made up of plants and pebbles, and is equipped with a filtration system with pump. It is fundamental to eliminate bacteria. This area is shallower than that reserved for swimming.
  • A swimming areatotally devoid of treating products. It is the largest and deepest part of the natural swimming pool.

The biological swimming pool has all the assets to seduce nature lovers.

Natural or organic swimming pool: the advantages

True private lake, the biological swimming pool is the solution which is essential if one wishes to create in its property a swimming area where water quality is naturally assured and improves over the years. It has the following advantages:

  • Duration of the work of approximately 8 weeks for a biological swimming pool of 30 to 35 m², which is quite fast, but more time must be allowed for a larger basin.
  • Radically transforms the outdoor space.
  • Very aesthetic, it fits perfectly into the environment it embellishes, brings a touch of authenticity to the property to which it adds a real capital gain.
  • Decorative in any season since it does not have to be covered by a tarpaulin.
  • Non-polluting.
  • Preserves and promotes biodiversity.
  • Does not require any chemicals.
  • Does not contain chlorine, which is a serious asset, because it is the cause of asthma, allergies and irritation in the sinuses, mucous membranes, respiratory tract, but also skin and hair. Chlorine is also suspected of promoting certain cancers.
  • Economical in terms of heating since the water in the biological swimming pool is only heated by the sun.
  • Makes the skin soft.
  • Does not require emptying, moreover emptying is not recommended since it would destroy the ecosystem.
  • Requires much less human intervention for its maintenance because it is self-purifying. You still have to clean the filter regularly, remove any algae, remove dead leaves and plant debris that have fallen into the water and of course you have to prune the plants if necessary.
  • Pool not subject to taxation (for the moment, at least), unlike the classic swimming pool.

We can also note that for the time being, the regulations does not require the installation of a security system around a biological swimming pool. However, and it is a common sense, it is preferable despite everything to provide an alert system and why not safety barriers to protect access to this aquatic space, especially if you have children.

Finally, we can note that the design of a natural swimming pool leaves a lot of room for the imagination since it comes in all imaginable forms.

Organic swimming pool: the disadvantages

Perfection does not exist, the biological swimming pool may well be distinguished by its many advantages, it nevertheless presents some disadvantages that it is important to know before planning its construction. These are the following points:

  • Expensive to buy, its price being higher than that of a traditional in-ground swimming pool. Depending on the concept, the biological swimming pool can cost up to 150% more than a conventional swimming pool. Its high price is mainly due to the construction of the area intended for filtration.
  • Energy-consuming in terms of electricity since its pump operates non-stop, which can represent nearly 5,000 kWh more in one year than for a conventional swimming pool.
  • Turns out to be demanding at first, forcing its owner to devote time to it, for example to install the essential plants, until the ecosystem is perfectly stabilized. We therefore do not bathe before.
  • Obliges to add water frequently because it evaporates faster in a biological swimming pool than in a conventional swimming pool.
  • Not being equipped with a heating system, the natural swimming pool can put off the cautious users. The water temperature must in fact not exceed 24 ° C to preserve biodiversity, prevent the proliferation of bacteria and algae, but also so that aquatic plants can thrive in a perfectly adapted environment.
  • Cannot be used from its construction since it is essential to allow time to adapt sufficient for plants so that they can fully fulfill their role of filter.

There is no need to worry if the water in the biological swimming pool is dark enough at first. This is a completely normal phenomenon and continues as long as the plants are not fully installed. After a few days or weeks, you can finally enjoy crystal clear water, without any chemicals.

Natural swimming pool: the necessary administrative procedures

Regarding the administrative procedures to be planned before the construction of a natural swimming pool, they are identical to those required for a traditional swimming pool. As a reminder, a building permit is required for a biological swimming pool with a surface area greater than 100 m², but a simple declaration of work is sufficient if its surface is 10 to 100 m². However, it is strongly recommended to inquire beforehand with the town hall of your municipality because the regulations may vary from one zone to another.

It is recommended contact a pool specialist from October, because it is at this time of the year that these specialists are least overwhelmed. This also leaves the time necessary to carry out the essential administrative procedures. In fact, if you have to apply for a building permit, you should know that a period of 2 to 3 months is necessary to obtain a response. This leaves plenty of time to then do the work so that the natural pool is ready in spring.

Natural swimming pool: construction price

The price of a natural swimming pool is extremely variable since it depends on the following elements:

  • Earthworks,
  • The complexity of the site,
  • The installation technique,
  • The quality of the materials,
  • The size of the pool,
  • The shape of the natural pool,
  • The amenities (bridge, railing, island, poolhouse, beach, shower, etc.),
  • Installation of the ecosystem (fountain, waterfall, fauna, flora, etc.).

For its construction, a higher budget at least 20 to 25% to the amount spent on the purchase of a traditional inground swimming pool. Before choosing between a classic swimming pool and a natural swimming pool, it should be remembered that in addition to the cost of the construction, there are between 300 and 400 € / year to maintain the plants, the basin, a budget to which must be added the expense that generates the upgrade due to the regular evaporation of water. For information, for a biological swimming pool of 100 m², it is necessary to add a minimum of sixty cubic meters. At the rate of 3.42 € / m3 (official price at 1er January 2020), this represents an additional expense of € 205.20 excluding subscription costs.

Having a natural swimming pool installed in your garden therefore deserves reflection and it is obviously essential to entrust your dream to a pool specialist so that he can first check the feasibility of the project.

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