Site Status

On March 31, 2011, U.S. Environmental Protection Agency (USEPA) and Pharmacia & Upjohn Company LLC entered into an updated Administrative Order on Consent to facilitate site remediation and return the property to productive use. The site-wide remedy provides long-term protection to human health and the environment and returns the property to productive use.


Remediation design and construction activities, performed with oversight by USEPA and Connecticut Department of Energy and Environmental Protection (CTDEEP), are now complete.

The East Side Corrective Measures and habitat restoration are complete. Over 60 acres of tidal marshes, inland wetlands and upland meadows have been restored as an ecological preserve. The West Side Corrective Measures are also complete. Approximately 17 acres of land on the western side have been made available for future commercial or light industrial use.

The Pharmacia & Upjohn Company LLC was recognized by the CTDEEP with the 2016 GreenCircle Sustainability Award for its sustainability and green remediation initiatives during implementation of corrective measures at the North Haven site. Learn more about the GreenCircle award here.

A digital library containing documentation and reports about this project is available for viewing at the North Haven Memorial Library located at 17 Elm Street, North Haven, CT.

Long-term Stewardship

With remediation construction activities complete, the Pharmacia & Upjohn Company, LLC has completed its obligations under its Order with the EPA, with the exception of some administrative reports and filings. On March 9, 2021, the CTDEEP issued a Stewardship Permit for the Pharmacia & Upjohn Company, LLC Site which covers ongoing obligations, including groundwater monitoring, maintenance of engineered controls, and operation of the groundwater extraction and treatment system.