Practice Quiz

Green Plumbing

Category - Water-Efficient Technology

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An aerobic treatment unit (ATU) system is a suitable alternative to a traditional on-site wastewater treatment system under which condition?
  1. Need a cheaper alternative
  2. Failing existing septic system
  3. Good soil permeability
  4. Interest in long span between pumping out
Explanation
Answer: B --An aerobic treatment unit (ATU) system is a suitable alternative to a traditional on-site wastewater treatment system when the existing septic system is failing. Changing out the septic tank for an ATU can encourage renewal of a clogged drainfield. ATUs are not necessary where the soil is permeable. In addition, ATUs are actually more expensive and require more frequent pumping out than do traditional septic systems.
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