Shallow pumping wells can often supply drinking water at a very low cost, but have a greater risk of contamination compared to deeper wells. Why?

Question

Responses
A shallow wells are cheapshallow wells are cheap
B shallow wells easily dry upshallow wells easily dry up
C shallow wells fill up with rain watershallow wells fill up with rain water
D surface impurities easily reach the shallow water sourcesurface impurities easily reach the shallow water source

Answer 1

The correct response is:

D. surface impurities easily reach the shallow water source

Shallow wells are more susceptible to contamination because they are located closer to the ground surface, where pollutants from surface runoff, agriculture, and waste can easily infiltrate the water supply.