The most common salt water pools use salt chlorination technology. Salt chlorinators turn salt into chlorine with a mild salinity of between 2,700-3,400 ppm (parts per million) with 3,200 ppm being optimal. Salt chlorinators require a low concentration of salt – approximately a teaspoon of salt per gallon of water. The correct salt level is comparable to a human tear and as such, imparts no or little taste. The actual amount of chlorination required to properly sanitize a pool varies due to the pool size, bather load, rainfall, temperature and the pool’s cleanliness.
Ocean-water pools are not that common. The salinity level can be as much as 35,000 PPM vs 3,200 of a salt chlorinated pool. Imagine the difference in your swimming experience.
There are many salt chlorination options available to suit individual applications, season length and budgets. For more on salt chlorination