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2. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   After this treatment, the water may be left open to reduce the chlorine smell and taste. [ 22 ] [ 6 ] The Centers for Disease Control & Prevention (CDC) and Population Services International (PSI) promote a similar product (a 0.5% - 1.5% sodium hypochlorite solution) as part of their Safe Water System (SWS) strategy.

3. Croton Water Filtration Plant - Wikipedia

   en.wikipedia.org/wiki/Croton_Water_Filtration_Plant

   The Croton Water Filtration Plant, is a drinking water treatment facility in New York City which began operation in 2015. The plant construction cost was over $3 billion, [ 6 ] [ 3 ] The facility was built 160 feet (49 m) under Van Cortlandt Park 's Mosholu Golf Course in the Bronx .

4. Water chlorination - Wikipedia

   en.wikipedia.org/wiki/Water_chlorination

   In a paper published in 1894, it was formally proposed to add chlorine to water to render it "germ-free". Two other authorities endorsed this proposal and published it in many other papers in 1895. [4] Early attempts at implementing water chlorination at a water treatment plant were made in 1893 in Hamburg, Germany.

5. Chloramination - Wikipedia

   en.wikipedia.org/wiki/Chloramination

   Chloramination is the treatment of drinking water with a chloramine disinfectant. [1] Both chlorine and small amounts of ammonia are added to the water one at a time which react together to form chloramine (also called combined chlorine), a long lasting disinfectant. Chloramine disinfection is used in both small and large water treatment plants.

6. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   When any of these pool chemicals are used, it is very important to keep the pH of the pool in the range 7.2 to 7.8 – according to the Langelier Saturation Index, or 7.8 to 8.2 – according to the Hamilton Index; higher pH drastically reduces the sanitizing power of the chlorine due to reduced oxidation-reduction potential (ORP), while lower ...

7. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Chlorine is a strong oxidant that rapidly kills many harmful micro-organisms. Because chlorine is a toxic gas, there is a danger of a release associated with its use. This problem is avoided by the use of sodium hypochlorite, which is a relatively inexpensive solution used in household bleach that releases free chlorine when dissolved in water ...