Salt Questions · Home, wellness & DIY
How does a saltwater pool chlorinate itself?
Short answer
A saltwater pool uses a salt chlorine generator. Water with dissolved salt, typically around 3,000 parts per million (about a tenth as salty as the sea), passes through an electrolytic cell, where electricity turns chloride into chlorine. The chlorine sanitizes the water, then reverts to salt, so the cycle repeats. It is still a chlorine pool.
How salty is it?
The cycle
- Salt is added to the pool and dissolves into sodium and chloride ions.
- Pool water flows through the generator cell, where an electric current converts chloride into chlorine (as hypochlorous acid).
- The chlorine kills bacteria and algae.
- Used chlorine breaks down back to chloride, ready to be converted again.
How salty is it?
Manufacturers commonly target about 2,700–3,400 ppm, depending on the system. Seawater is about 35,000 ppm, more than ten times saltier.
Upkeep
Salt is lost mainly through splash-out, backwashing and rain dilution, not by being used up. Owners still test chlorine and pH, clean scale from the cell, and watch for corrosion of metal fittings and stone.
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Cite this page
For school projects and reports. Teachers often prefer the original sources too: see the list below.
The Salt Almanac. (2026, November 8). How does a saltwater pool chlorinate itself. https://saltalmanac.com/answers/how-does-a-saltwater-pool-chlorinate-itself
“How does a saltwater pool chlorinate itself.” The Salt Almanac, 8 Nov. 2026, saltalmanac.com/answers/how-does-a-saltwater-pool-chlorinate-itself. Accessed [today's date].
“How does a saltwater pool chlorinate itself.” The Salt Almanac. Last modified November 8, 2026. https://saltalmanac.com/answers/how-does-a-saltwater-pool-chlorinate-itself.
Original sources
- Wikipedia. Salt water chlorination. https://en.wikipedia.org/wiki/Salt_water_chlorination