Chlorine is the most popular treatment for keeping swimming pool water chemistry balanced because it's highly effective and relatively low cost. Other disinfectants include bromine, ozone, and ultraviolet (UV) radiation.

Saltwater System The saltwater chlorinator converts the dissolved salt into chlorine to sanitise your pool water as it is needed. In short, you are generating your own chlorine from salt instead of adding traditional chlorine straight to the pool water.

Chlorine is added to the water to kill germs. When chlorine is in a pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E. coli, as well as germs that cause viruses such as diarrhea and swimmer's ear.

Chlorine is the so-called “gold standard” of pool water types, known for its efficiency at killing bacteria. It counteracts contaminants in the water such as sweat, dirt, urine, and sunscreen or body lotions through a chemical reaction. Chlorine can be added once per week, using liquid, tablets or granular chlorine.