If you are visiting one of the Baths of Budapest, you might ask yourself how the Thermal and other pools are kept clean, whether they contain chlorine.
Keeping the pools clean
Thermal pools (that is pools using the natural hot spring waters pouring from underground thermal reservoirs) use a sophisticated filtering technology combined with a complete refilling of the pools every single day in order to preserve the quality of thermal waters and the beneficial effects of the mineral-rich natural water composition. No chlorine or chemicals are added.
On the other hand, swimming and cool water pools are normally treated with a minimum amount of chlorine and cleaning salts so that waters uphold health and safety legislation in public bathing facilities.
Difference between the indoor and outdoor pools
From an aqua-therapeutical view, the quality of natural hot spring waters is higher in the 15 indoor pools as there is no chlorine added to the internal section of the Budapest Thermal Baths.
Nevertheless, the recreational and hydro-therapeutical benefits of the 3 outdoor pools, including the swimming pool are potentially stronger compared to traditional pool waters.
The outdoor thermal pools smell of natural thermal waters and the chlorine can be hardly detected.