Practice Quiz

Green Plumbing - Question List

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256. Where does rainwater rank among alternative water sources with regard to its range of potential utilization opportunities?
  1. First
  2. Second
  3. Last
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257. Which of the following is a highly suitable source of graywater for urban reuse?
  1. Tub/shower water
  2. Kitchen sink water
  3. Clothes washer water
  4. None of the above
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258. Which of the following are potential contaminant-related risks associated with the use of graywater?
  1. Traces of blackwater/fecal matter and associated pathogenic bacteria
  2. High levels of toxins such as bleach or solvents
  3. Boron and salt concentrations harmful to plants during irrigation
  4. All of the above
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259. All of the following are potential storage and delivery risks with graywater, except:
  1. Confusing graywater pipes with drinking water pipes
  2. Infiltration of unsecured storage tanks by rodents, mosquitos
  3. Lack of delivery system options
  4. Groundwater contamination
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260. Which of the following is considered an unsafe use of treated graywater for single residences?
  1. Clothes washing
  2. Topping up a swimming pool
  3. Outdoor wash-down
  4. Surface irrigation
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