Some recharged aquifers susceptible to contaminants, study finds


  • Randy Showstack


Injecting treated water into wells to recharge some aquifers could introduce a long-lasting contaminant that affects future usability of the water, according to a 13 May report by the U.S. Geological Survey (USGS).

A test of the quality of water injected into wells in a desert town 130 kilometers northeast of Los Angeles, California, found that certain carcinogenic compounds mixed and lingered in the aquifer, even after extensive pumping to try to remove them.