![]() Since 2014, significant steps have been taken by the project response technical team, which includes the City of Portsmouth, the Air Force Civil Engineering Center, the EPA, the NHDES and the Pease Development Authority. Because the level of PFOS exceeded the " provisional health advisory" set by the EPA, the well was shut down and it has been off ever since. The contamination at the Haven Well has been attributed to the past use of firefighting foam at the air base and the air base’s fire training center. For decades, they have been used in hundreds of industrial applications and consumer products such as carpeting, apparels, upholstery, food paper wrappings, fire-fighting foams and metal plating. PFAS compounds are a diverse group of compounds resistant to heat, water, and oil. PFOS is one of a class of chemicals known as Per- and polyfluoroalkyl substance (often referred to as PFCs or PFAS). Following seven years of research, treatment piloting and engineering design followed by the installation of a sophisticated, multi-step filtering system at the Pease Water Treatment Facility, the NH Department of Environmental Services issued a permit for the City to restore operation of the well. The City of Portsmouth took the Haven Well off-line in 2014 after testing revealed the presence of PFOS chemicals in the water above the EPA’s preliminary health advisory level. ![]() Pease Water Treatment System Update Presentation - Septemfor the Pease Restoration Advisory Board Water Quality and Response to PFAS Compoundsįor information about the Portsmouth Water System's PFAS sampling, click here.
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