Artificial bathing in a closed system meets the following requirements:
1° The entire volume of the bathing area must be renewed in less than 12 hours, during the period when it is open to the public. This renewal is ensured by a continuous supply of new and recycled water. Artificial bathing areas are equipped with a system for measuring the volume and estimating the flow rate of the various supplies of new and recycled water;
2° The water conditions in bathing areas are designed to avoid any stagnation zones that would make the quality of the water non-uniform;
3° The layer of surface water that is continuously removed or recycled represents 50% of the recycled water flow;
4° The beaches adjacent to the artificial bathing area are designed to avoid water stagnation and run-off water from the latter is evacuated without flowing into the basins;
5° The bathing area is designed so that it can be emptied and cleaned as necessary;
6° Access to the bathing area and surrounding beaches is forbidden to domestic animals and measures or arrangements are implemented to limit access to wild animals;
7° The value of the fresh water supply is defined so as to comply with the quality limits mentioned in article D. 1332-47;
8° Biofilm and algae growing on the edges and in the artificial bathing area are removed mechanically as necessary;
9° The maximum instantaneous number of bathers in the bathing area is defined so as to guarantee a minimum volume of water accessible for bathing of 10 cubic metres per bather;
10° The maximum daily number of bathers meets the conditions set by order of the Ministry of Health;
11° Recycled water is treated in such a way as to ensure water quality control and bathers’ health safety;
12° The treatment area and treatment facilities are physically separate from the bathing area;
13° The use and presence of dyes is prohibited in the bathing area in the presence of bathers;
14° The use of algaecides or any chemical product introduced directly into the bathing area, even in the absence of bathers, is prohibited;
15° The water in the artificial bathing area must not be disinfected.