Saltwater systems have been around in the United States since the 1980’s. They were first used commercially in New Zealand in the early 1970’s. Salt water chlorination is a process that uses dissolved salt for the chlorination system. The chlorine generator, also known as a salt cell, uses electrolysis in the presence of dissolved salt to produce hypochlorous acid, a very weak acid, and sodium hypochlorite. These are sanitizing agents already commonly used in swimming pools. 

Article obtained from the California Pool and Spa Association website.

(SACRAMENTO)—As part of its ongoing Let’s Pool Together campaign, the California Pool and Spa Association (CPSA) announced today the release of its Model Drought Response Plan aimed at providing state and local policymakers with positive ideas designed to achieve water savings related to swimming pools, spas and hot tubs.