How can contaminated groundwater br purified through natural processes?

Question

Pls include the sources!!!

Answer 1

You would be asking about a process described as Natural Attenuation.


It is summarized as the degradation of chemicals in soil and groundwater to below harmful levels. This occurs when source material is removed and the "contaminant plume" migrates to the point that it slowly loses concentrations.

http://toxics.usgs.gov/topics/attenuation.html

http://www.epa.gov/oust/cat/mna.htm

Answer 2

The most important source to clean the underground water resources is afforastion or planting trees.THe trees hold the soil particles together ,it ensures better filteration of the water sipping down.THE TREES ALSO ABSORB THE EXCESS AMOUNT OF MINERALS FROM THE SOIL WATER AND PURIFY IT.