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. The Pharmacia & Upjohn Company has filed a Stewardship Permit Application with the Connecticut Department of Energy and Environmental Protection (CTDEEP) to address ongoing operations, maintenance and management.

This Stewardship Permit will cover ongoing obligations, including operation of the onsite groundwater treatment facility. A groundwater extraction system controls the migration of groundwater through continuous pumping and directs groundwater for treatment in the highly sophisticated, state-of-the-art, onsite treatment plant. Treated groundwater is discharged to the Quinnipiac River under a strict permit with the CTDEEP. Groundwater results will be submitted to CTDEEP on a regular basis and are on file in the public repository.