Answer Key: Self-Test C-4.3

  1. In typical onsite sewage systems, what separation process occurs in the tank?
    1. Solids and scum separate from the liquid.
  2. In a septic tank, what helps break down the solids into sludge?
    1. Bacteria
  3. In what area of the onsite sewerage system is the wastewater released to the soil?
    1. Disposal field

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Block C: Routine Trade Activities and Electrical Concepts Copyright © 2026 by Skilled Trades BC, TRU Open Press is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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