rocky hill municipal well

WASHINGTON STREET

The Rocky Hill Municipal Well Site (Site) covers 2 acres in the southern part of Somerset County and consists of two wells that were constructed in 1936 to supply the residents of the Borough of Rocky Hill with a source of drinking water. In 1978, the first well was sealed and abandoned because it was contaminated with volatile organic compounds (VOCs), in particular trichloroethylene (TCE). The second well continued to operate until 1979, when it was also closed due to high levels of TCE. The well reopened for a short time when TCE levels declined, only to be closed again in 1982, when contamination levels increased in the groundwater. The Borough temporarily used a private water supply until an air stripper could be installed on the municipal well. The air stripper has been operating since 1982 to assure drinking water standards are met. Approximately 700 people depend on the Rocky Hill Municipal Well as their drinking water source. An investigation of the Site led State officials to sample private wells in the neighboring Montgomery Township Housing Development. Results indicated widespread contamination with various VOCs. Because of the proximity and the similarity of the contaminants present, it was decided to address the Rocky Hill Municipal Well Site and the Montgomery Township Housing Development Site, also on the NPL, jointly Site Responsibility: This Site is being addressed through Federal actions.

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