Saint-Gobain to Connect Hundreds of Londonderry Homes to Public Water, Address PFAS Concerns

The agreement will extend a water main to allow approximately 350 properties to connect to a community water system.

Mar. 31, 2026 at 1:10pm

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An extreme close-up X-ray photograph showing the intricate internal structure of a water pipe, with glowing lines and ghostly details against a dark background, conceptually representing the new water system that will address PFAS concerns in the community.A high-tech X-ray view of the water infrastructure that will soon provide clean drinking water to hundreds of Londonderry homes affected by PFAS contamination.Concord Today

The State of New Hampshire Department of Environmental Services and the Town of Londonderry have reached an agreement with Saint-Gobain Performance Plastics Corporation to extend a water main in Londonderry, allowing hundreds of homes to connect to a community water system and address PFAS contamination concerns.

Why it matters

This agreement is an important step in holding Saint-Gobain accountable for PFAS contamination in the Londonderry community and ensuring residents have access to clean, safe drinking water. PFAS chemicals have been linked to various health issues, making this a critical public health issue for the area.

The details

Under the agreement, Saint-Gobain will pay approximately $1.71 million toward the project, which will extend the water main up High Range Road. The Town of Londonderry's portion of the $4.3 million construction costs will be funded through the New Hampshire Drinking Water and Groundwater Trust Fund. This will allow around 350 properties on the west side of High Range Road to connect to the Pennichuck Water Works community water system. The water main will also facilitate additional connections on the east side of High Range Road if needed.

  • The agreement was reached on March 31, 2026.

The players

Saint-Gobain Performance Plastics Corporation

A chemical company that has been held accountable for PFAS contamination in the Londonderry community.

New Hampshire Department of Environmental Services

The state agency that worked with the Town of Londonderry and Saint-Gobain on this agreement.

Town of Londonderry

The local municipality that partnered with the state and Saint-Gobain on this project to address PFAS contamination.

Pennichuck Water Works

The community water system that will provide service to the homes connected through this water main extension.

New Hampshire Drinking Water and Groundwater Trust Fund

The state fund that will cover the Town of Londonderry's portion of the construction costs.

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What they’re saying

“This agreement is another important step in our efforts to hold Saint-Gobain accountable and assist Londonderry residents affected by PFAS contamination. We remain steadfast in our efforts to protect access to clean water for all Granite Staters.”

— Attorney General Formella

What’s next

The water main installation project is expected to begin in the coming months, with the goal of connecting the approximately 350 properties to the community water system as soon as possible.

The takeaway

This agreement represents a significant step forward in addressing the PFAS contamination issue in Londonderry, ensuring that hundreds of residents will have access to clean, safe drinking water. It demonstrates the state's commitment to holding polluters accountable and protecting the health of its citizens.