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SAHRA is an
NSF Science and
Technology
Center

 
Pool Area: Swimming Pools

POOL COVERS
By using a pool cover, you can save 90 to 95% of the water that would otherwise be lost to evaporation. An uncovered standard-sized (16 ft. x 32 ft.) pool loses approximately an inch of water each week to evaporation. Modern pool covers are available in a variety of styles and materials, including automated models. The covers can provide a safety barrier for children and pets, keep debris and wildlife out, and extend the life of the chemicals in the pool.

POOL & SPA FILTER BACKWASH
The filters in swimming pools and outdoor spas are periodically backwashed to remove collected material. This water can be directed onto turf or other landscaping plants. Constructing shallow basins around trees and shrubs located near the filters will facilitate reuse of this water.

DRAINING THE POOL
Swimming pools seldom need to be drained, so keep those occasions to a minimum. A 16 ft. by 32 ft. pool holds 20,000 gallons of water! If you live in a cold climate, new ice compensating technologies are available to winterize pools so you don't have to drain them. Check with a local pool company to see what is available in your area.

If you must drain the pool, neutralize the acids and don't use chemicals for 48 to 72 hours before draining. Redirect the water for some constructive purpose if at all possible, such as watering the lawn.

OTHER CONSERVATION MEASURES

  • Windbreaks around pools such as fences, privacy barriers, and shrubbery will help to minimize evaporation on breezy days as well as maintain temperature. A 7-mph wind at the surface of the pool can increase heat losses 300%.

  • If you refrain from keeping the water level very high you can minimize losses from splashing.

  • Do routine maintenance. Check for leaks regularly and test and maintain the water quality.

  • You can conserve energy and associated costs by using a smaller, higher-efficiency pump and running it no more than 3 hours per day. A .75 horsepower pump is sufficient for most residential pools. Smaller pumps can be used for additional savings if you substitute a large filter, increase the diameter or decrease the length of the pipes, or replace 90-degree elbows with 45-degree elbows or flexible pipe.


   
 
 
  ©2001. SAHRA. Arizona Board of Regents