Which of the following explains why many household septic systems end up contaminating the shallow groundwater system?

A. all of the answers listed here
B. drain field becomes plugged by solids leaving the septic tank
C. residents pouring household chemicals down their drains
D. water table is too high for the system to operate properly
E. permeability of material beneath drain field is too low for proper drainage


Answer: A

Environmental & Atmospheric Sciences

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