Nearly 1,000 more wells must be tested for PFOA in Merrimack
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The Saint-Gobain contamination zone now under investigation by the state has more than quadrupled in size.
With newer, more stringent state standards in place for perfluorooctanoic acid, or PFOA, thousands of additional private wells in the region will need to be tested for contamination, according to officials.
Previously, the New Hampshire Department of Environmental Services was investigating water contamination within a 14-square-mile area of the Saint-Gobain Performance Plastics facility in Merrimack.