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.

Unlike manually dosed chlorine, but similar to saltwater pools, a mineral pool system uses a blend of naturally sourced minerals to help disinfect your pool. These minerals – usually magnesium, potassium and sodium chloride – dissolve in the pool water before passing through a chlorinator.

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.