Superfund Site Profile
The San Gabriel Valley (Area 2) site is a large area of contaminated groundwater in Los Angeles County, California. It is one of four Superfund sites in the 170-square-mile San Gabriel Valley. Four large water treatment facilities were constructed between 2002 and 2006 to begin cleanup of the groundwater. They remove thousands of pounds of contaminants from the groundwater each year. More than $200 million has been spent on the cleanup to date, and more than 95 billion gallons of contaminated groundwater has been treated. The cleanup is being paid for by potentially responsible parties (PRPs) in accordance with an EPA order.
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