Practice Quiz

Green Plumbing - Question List

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21. What proportion of homes in the US has a water leak (according to the USGS)?
  1. 1 in 208
  2. 1 in 318
  3. 1 in 388
  4. 1 in 458
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22. 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
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23. In calculating financial savings from reducing hot water usage, which of the following is not a usual factor in those savings?
  1. Water savings
  2. Sewerage disposal system reduction
  3. Energy savings
  4. Stormwater disposal cost reduction
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24. Each of the following is a basic step in determining the water use of an irrigation system zone, except:
  1. Calculate the product of GPM and minutes/week
  2. Identify length of irrigation event and frequency of events in a week
  3. Measure size of irrigation zone in square feet
  4. Take initial water meter reading, run zone for X minutes, take another reading
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25. Which of the following is not a factor in determining annual water savings attainable by switching to a high efficiency toilet?
  1. Tank refill rate
  2. Average flushes per day
  3. Gallons per flush
  4. Number of persons in the household
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