Many environmental and cost considerations affect the location and design of water purification plants. Groundwater is cheaper to treat, but aquifers usually have limited output and can take thousands of years to recharge.
Orange County Water District's former wastewater purification plant. The last component of WF 21 was demolished in 2007 to make room for the advanced purification facility, the Groundwater Replenishment System, which went on-line in January 2008.
A common water-softening method often found on a large scale at water purification plants that remove some organics and radium by adding calcium oxide or calcium hydroxide to increase the pH to a level where the metals will precipitate out.
Ion Exchange Treatment: A common water-softening method often found on a large scale at water purification plants that remove some organics and radium by adding calcium oxide or calcium hydroxide to increase the pH to a level where the metals ...
A chemical that is widely used for water disinfection, for instance in swimming pools or water purification plants. It is especially useful because it is a stable dry powder and can be made into tablets.
Candle filter ...
 See also: Environment, Site, Well, Liquid, Organic
  
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