Source of downtown Visalia, California well contamination sought

March 4, 2009 - Workers began drilling a series of six wells in downtown Visalia Tuesday, seeking the source of a cancer-causing chemical found in the city's water supply.

The wells will be in an area where California Department of Toxic Substances Control researchers found high levels of perchloroethylene (PCE) in water wells.

Two dry-cleaning businesses are in the area, as well as the locations of two former dry-cleaning businesses.

More . . .