This site serves as a source of news and information for the residents of North Haven and the surrounding communities regarding corrective measures at the Pharmacia & Upjohn Company LLC Site.

Stewardship Permit

The Connecticut Department of Energy and Environmental Protection (CTDEEP) has released a Notice of Tentative Determination to issue a Stewardship Permit to Pharmacia & Upjohn Company, LLC, pursuant to Connecticut General Statutes (CGS) Sections 22a-6h and 22a-449(c), 22a-454 as applicable, and Section 22a-449(c)-110 of the Regulations of Connecticut State Agencies (RCSA).

A Fact Sheet on the Pharmacia & Upjohn Company LLC Stewardship Permit is available here. For additional information regarding the Stewardship Permit Application and Public Comment opportunities, please visit the Stewardship Permit page.


Under the guidance of the Connecticut Department of Energy and Environmental Protection (CTDEEP) and the U.S. Environmental Protection Agency (USEPA), Pfizer, on behalf of its subsidiary Pharmacia & Upjohn Company LLC, is working to implement corrective measures that accomplish four key objectives:

  1. To implement a remediation program that is protective of human health and the environment;
  2. To ensure that site remediation activities facilitate reuse and redevelopment of portions of the property;
  3. To preserve and enhance the ecological assets of the property in a manner that creates value in the Quinnipiac River regional ecosystem;
  4. And to position the property as an asset to North Haven and the Quinnipiac River region.


The USEPA approved the final remedy for the site on September 10, 2010. On March 31, 2011, 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. On September 30, 2019, USEPA deemed the Remedy Construction Complete.

With remediation construction activities complete, Pharmacia and Upjohn has fulfilled its obligations with the USEPA, with the exception of some administrative filings. A Stewardship Permit has been filed with the CTDEEP to address ongoing operations, maintenance and management activities at the site. This permit will cover ongoing obligations, including operation of the onsite groundwater extraction and treatment system, which will operate for the coming years. Once CTDEEP issues a Notice of Tentative Determination (NTD), a public information session will be held and the community will have the opportunity to provide comments on the application. For detailed information regarding onsite activities, visit the Site Status page.