Once an aquifer has been contaminated it "cleanses itself"rather rapidly because the contaminants adhere to rock/sediment particles.

Question

Quizplus · Accepted Answer

Aquifers do not cleanse themselves rapidly once contaminated; the process of natural attenuation can be very slow, and contaminants can persist for decades or longer, depending on the type of contaminant and the characteristics of the aquifer.

Once an Aquifer Has Been Contaminated It "Cleanses Itself"rather Rapidly