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2. Electrochlorination - Wikipedia

   en.wikipedia.org/wiki/Electrochlorination

   The water used is usually brackish water or brine (i.e. a solution with >0.5% salinity). In these cases, additional contaminant chemicals may be present in the water feed. The low voltage DC current still performs electrochlorination. The excess chemicals are left untouched and can be easily discarded. [2]

3. Salt water chlorination - Wikipedia

   en.wikipedia.org/wiki/Salt_water_chlorination

   Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

4. Water chlorination - Wikipedia

   en.wikipedia.org/wiki/Water_chlorination

   As an alternative to shock chlorination, some swimming pools are chlorinated by use of a chlorine-generating filter that electrolyzes common salt. Pools chlorinated by this method generally have lower levels of chlorine than directly chlorinated pools. Such pools are called saltwater pools. [citation needed]

5. Why America stopped building public pools

   www.aol.com/public-pools-disappearing-across...

   There is one outdoor public pool for every 38,000 people in America — from 34,000 in 2015 — according to the National Recreation and Park Association.

6. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   An electrically operated water pump is the prime motivator in recirculating the water from the pool. Water is forced through a filter and then returned to the pool. Using a water pump by itself is often not sufficient to completely sanitize a pool. Commercial and public pool pumps usually run 24 hours a day for the entire operating season of ...

7. List of lap pools in San Francisco - Wikipedia

   en.wikipedia.org/wiki/List_of_lap_pools_in_San...

   Diving boards at the former Fleishhacker Pool. This is a list of lap pools in San Francisco, California. San Francisco has 44 lap pools. Only lap pools are included on this list. Smaller recreational pools and pools in private residential buildings are not included. There are 5 salt-water pools and 4 outdoor pools.