Which would be the most prone to surface contamination from runoff and infiltration?
A) wells a few hundred metres uphill from septic systems in rugged mountainous terrain
B) deep confined aquifers directly below contaminated sites
C) shallow aquifers with thin soils or unconsolidated coarse overburden
D) an aquifer with a thick, overlying, unsaturated vadose zone

Question

Quizplus · Accepted Answer

Shallow aquifers with thin soils or unconsolidated coarse overburden are most prone to surface contamination due to the minimal filtration and protection offered by the thin or coarse overlying materials, allowing contaminants to more easily infiltrate and affect the water quality.

Which Would Be the Most Prone to Surface Contamination from Runoff