Filling your pool, or “mise en eau,” is the final step in the construction of a swimming pool. Although it may seem like the simplest stage, there are rules to follow to ensure correct filling and to fully enjoy your pool. We will guide you so that you can effectively carry out the filling of your pool.

The fundamentals of filling

The first rule concerns the quality of the water to be used. Indeed, a proper filling of your pool helps to reduce standard maintenance needs.

The second rule addresses the filling method. It is up to you to choose the one that suits you best. Simply be aware that it is prohibited by law to fill your pool from fire hydrants.

The third rule is related to the filling period. Inquire about the restrictions in force in your municipality. Generally, filling is prohibited during drought periods. However, some municipalities allow new owners to proceed with their first filling even during dry periods, but this can vary.

When to fill your pool?

You can proceed with filling your pool in both summer and winter. However, spring is the most favorable period. In principle, the filling begins at the end of the work, after the coating is completely dry. That said, in some cases, it is recommended to fill as soon as the coating is installed, particularly for a pool equipped with a liner. For the liner to adhere correctly to the walls and bottom, it is not necessary to wait between its installation and the filling.

For a concrete pool, it is also advised not to delay after construction, as there are risks of wall deformation.

How to choose the water for the pool?

Professionals recommend performing a hardness analysis as well as checking the pH of the water before use. The water must be of sufficient quality to support chemical treatment. If these concepts seem unclear to you, you can consult an expert or simply use tap water.

Alternatively, you can choose well water, but this will require performing several tests beforehand, which incurs costs. Rainwater, seawater, or even river water can also be used, but it is then necessary to call in a specialist to monitor the water quality.

Which method to adopt?

You can use garden hoses. The more you use, the faster the filling will be. However, if you opt for well water, you will need a pump (submerged or surface) to pump it. In any case, to avoid evaporation after filling, it is advisable to cover the pool with a cover.

At what level to fill?

It is generally recommended to fill a pool up to the mid-height of the skimmer. If you have any doubts, do not hesitate to ask your pool professional for advice. You can also use a level regulator that will automatically adjust the filling to the optimal level for your pool.

What is the cost of the filling?

If you carry out the filling yourself, the cost will correspond to the quantity of water used, which depends on the volume of your pool. In France, the average price of water is approximately €3/m3. If you choose well water, you will need to take into account the expenses related to the purchase and installation of the pump. For rainwater, the cost will mainly be related to the intervention of a professional. If you hire a specialist, they will base their price on the size of the pool and the type of water used.