Practice Quiz

Green Plumbing

Category - Building Plumbing Inspection

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About how many gallons of water are used during a single back-flushing event for a traditional pool filter design?
  1. 40 to 70 gallons
  2. 100 to 140 gallons
  3. 180 to 250 gallons
  4. 240 to 300 gallons
Explanation
Answer: C - A single back-flushing event for a traditional pool filter design uses about 180 to 250 gallons. This is obviously a large amount of water use that can be greatly reduced by replacing the traditional pool filter design with a cartridge-style pool filter intended to save water.
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