Put the following events of septic system operation in the correct order of occurrence:
I. Household sewage is piped into septic tank.
II. Wastewater containing suspended material flows into drain field.
III. Purified wastewater percolates into groundwater or evaporates from soil.
IV. Bacteria decompose organic material in well-aerated soil.
V. Heavy particles settle out of water and bacteria decompose grease and oil.
A) I - II - III - IV - V
B) I - V - II - IV - III
C) I - IV - III - V - II
D) I - III - V - II - IV
E) I - IV - III - II - V

Question

Quizplus · Accepted Answer

The correct sequence for septic system operation starts with household sewage being piped into the septic tank (I), where heavy particles settle out and bacteria begin decomposing grease and oil (V). Then, the partially treated water flows into the drain field (II), where further decomposition of organic material occurs in the well-aerated soil by bacteria (IV), and finally, the purified wastewater percolates into the groundwater or evaporates (III).

Put the Following Events of Septic System Operation in the Correct