Mother Nature uses salt (sodium chloride) to keep the oceans clean and healthy so organisms can live in it. Humans can swim in it without hurting our eyes or burning our skin because salt is softer than chlorine.
Saltwater pools are considered ecologically friendly because they don't use the harsh chemicals that chlorine pools do. This is better for swimmers, plants and grass.
Pool owners can purchase a salt chlorine generator, which converts regular salt into salt for the pool. This will save lots of time when it comes to pool maintenance.
Potential Cost Benefits
As of September 2009, the salt chlorine generator costs about $1,000, but it will pay for itself in savings over two to three years because salt is much cheaper than chlorine.
Saltwater is gentler than chlorine on your swimming suit, so expect to save some money on suits as well.