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DHHS Home > Division of Public Health Services > Perfluorochemicals (PFCs) and Your Health >
Investigation into Contaminant Found in Pease Tradeport Water System
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DHHS has identified two laboratories that offer testing to individuals through their primary care providers. Information about their testing process, panel of PFCs tested, and pricing can be obtained by calling the numbers listed below and/or visiting their website:

In the first phase of testing, the Centers for Disease Control and Prevention (CDC) lab tested all of the 466 samples. In the second phase, over 1,100 individuals submitted blood samples for testing. All results have been sent back to the participating individuals. Once all of the results are analyzed and collated, we will create a final report looking at all the data and will conduct a community meeting to discuss these results.

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The Division of Public Health Services (DPHS) in collaboration with the New Hampshire Department of Environmental Services (DES) is responding to a positive test result for perfluorooctane sulfonic acid (PFOS) in a water sample from a well that serves the Pease Tradeport and the NH Air National Guard Base at Pease. Because the level exceeds the "provisional health advisory" set by the U.S. Environmental Protection Agency (EPA) the well was immediately shut down by the City of Portsmouth. PFOS is one of a family of chemicals called PFCs for perfluorochemicals. PFCs have been used for decades in many commercial products, such as stain-resistant carpeting, fire-fighting foam, nonstick cookware, fabric coatings, and some food packaging. As a result, they are found throughout the environment. They are also very persistent, and do not break down readily in the environment, or in our bodies. Consequently, PFCs can be detected in the blood stream of most people.

The other two wells at Pease did not contain PFCs above the provisional health advisory level. The water supply for the City of Portsmouth was checked as well out of an abundance of caution and the levels were within the health advisory level.

The most current information about the Pease Tradeport Blood Testing Program can be found in the Current Weekly Pease Testing Program Update below. If you have further questions, please email us at

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