Practice Quiz

Green Plumbing - Question List

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136. Which is a primary means of capturing potable water for reuse in urban areas?
  1. Fog/dew collection
  2. Rainwater harvesting
  3. River and stream overflow
  4. Groundwater excavation
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137. Which of the following water treatment actions generally occurs after filtration?
  1. Flocculation
  2. Settling
  3. Disinfection
  4. Coagulation
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138. The clustering and adhesion of fine particles in a liquid or semi-liquid compound to form larger masses is known by which of the following water treatment terms?
  1. Screening
  2. Flocculation
  3. Sedimentation
  4. Aeration
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139. All of the following are categories of regulated contaminants for US drinking water except:
  1. Microorganisms
  2. Disinfectants
  3. Inorganic Chemicals
  4. Sand and grit
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140. Which of the following is a point source of water quality degradation?
  1. Pharmaceutical manufacturer discharges
  2. Stormwater
  3. Agricultural runoff
  4. Erosion-related sediment
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