Practice Quiz

Green Plumbing

Category - Water-Efficient Technology

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Which shows the correct order of rainwater’s movement through the harvesting system components, starting with rain and assuming it is destined for potable water use?
  1. Gutter - storage tank - purification system - pressure pump
  2. Catchment surface - gutter - storage tank - filters
  3. Catchment surface - filters - first flush device - purification system
  4. Gutter - check valve - first flush device - filters
Explanation
Answer: B - Rainwater moves from the catchment surface through the gutters via the downspouts to the storage tank, and then through filters en route to purification and reuse. The first flush device is always prior to the storage tank to keep the most contaminated water out of the system; the check valve and filters are always after the storage tank.
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