Region 1

Portland Head Lighthouse, Maine, USA at sunrise

Southern New Hampshire (NH)

The New Hampshire Department of Environmental Services (NHDES) tested public and private drinking water supplies in the Southern New Hampshire area that may have been contaminated by discharges from nearby factories. Some of the public and private wells are contaminated with PFAS (per- and polyfluoroalkyl substances). The state is taking actions to address the contamination. ATSDR is evaluating the test results to determine if drinking the water may harm people’s health and will provide the findings in a written report. 

Background on the investigation is available via the NHDES website at icon 

Region 1 Contact

CDR Tarah Somers, RN, MSN/MPH
Regional Director

(617) 918-1493
(617) 918-1494 – FAX

Pease International Tradeport (aka Former Pease Air Force Base) (NH) 

The City of Portsmouth, working with the NH Department of Environmental Services and the NH Department of Health and Human Services (NH DHHS), tested the Pease International Tradeport drinking water wells for PFAS (per- and polyfluoroalkyl substances) in May 2014. One of three wells had elevated levels of PFOS (perfluorooctane sulfonate). The City of Portsmouth took the well off-line. PFAS were found in the other Tradeport wells, and in some residential private drinking water wells located near the site. The source of PFAS in the groundwater is likely past use of aqueous film-forming foam (AFFF) used at the former Pease Air Force Base. ATSDR evaluated the test results from contaminated city and private wells to determine if drinking water from these wells may harm people’s health. A report that evaluated these findings was released for public comment April 1, 2019.  The report can be found at icon. ATSDR is currently preparing a report evaluating PFAS exposures from private wells in the area. ATSDR has created a Community Assistance Panel (CAP) to receive input from community members about health studies. For more information, visit the CAP website at:

In 2019, ATSDR initiated the Pease Study, a health study that will look at the association between health outcomes and PFAS exposure to expand the PFAS science base. 

The NH DHHS provides information about the site at icon. In 2015, NH DHHS tested the blood of people who worked on, lived on, or attended childcare on the Pease Tradeport or Pease Air Force Base, and drank water from contaminated wells 

North Bennington PFOA Well Water (VT) 

The Vermont Department of Environmental Conservation (VDEC) found PFOA (perfluorooctanoic acid) in private drinking water wells in North Bennington. VDEC is testing private wells within a 1.5-mile radius of the former ChemFab site to see how widespread the contamination is. The Vermont Department of Health (VDH) asked NCEH/ATSDR for technical support in addressing health issues. 

Visit the VT DPH for more information about PFOA at icon 

Hampden County near Barnes Air National Guard Base (MA)


As early as the 1980s, the Barnes Air National Guard Base (the Base) used aqueous film forming foam containing PFAS for its firefighting training. These compounds later moved off-site in groundwater, likely affecting both municipal and private drinking water wells located downgradient of the Base. 

In 2013, when PFAS was first detected, the Westfield Water Department and the Massachusetts Department Environmental Protection (MassDEP) took actions to ensure the quality of the drinking water in Westfield. These actions over the next several years included removing three drinking water supply wells from service and placing temporary water restrictions on all non-essential water use. Presently, the Westfield Department of Public Works (DPW) – Water Division’s primary sources of drinking water are from surface water and groundwater sources meeting federal and state PFAS guidelines. The Westfield DPW-Water Division installed a temporary treatment system.  This system ensures that PFAS levels in the treated water are below detection limits. The Westfield DPW-Water Division is in the process of installing permanent treatment on its four affected wells. The Westfield DPW-Water Division continues to test its water sources and pursue system improvements to address PFAS contamination. Nearby private wells were sampled and, if needed, filtration systems were installed. 

ATSDR is conducting an Exposure Assessment at this site. The primary goal of the exposure assessment is to provide information to the community about levels of PFAS in their bodies. This information might be used to help inform future studies evaluating the impact of PFAS exposure on human health. 

More information is available at:

Page last reviewed: June 24, 2020