Connecticut Brownfields Inventory
Connecticut defines brownfields as any abandoned or underutilized site where redevelopment, reuse or expansion has not occurred due to the presence or potential presence of pollution in the buildings, soil or groundwater that requires investigation or remediation before or in conjunction with the restoration, redevelopment, reuse and expansion of the property.
DEEP Brownfields List
The CT DEEP Brownfields Inventory was updated on June 11, 2024. It is organized by town and lists the site name, street address, and data source from which the listing was obtained. Columns listing the tax assessor ID, acreage, and latitude and longitude for each parcel. Brownfields that include more than one real estate parcel are included. Brownfields that occupy more than one real estate parcel are on separate rows listing the tax assessor's ID, and acreage of each parcel.
The Brownfields GIS map shows the locations of brownfields and distressed municipalities (updated August 18, 2023).
DEEP’s Brownfields Inventory includes:
- Sites that received Department of Economic & Community Development’s Office of Brownfield Remediation and Development grants or loans for brownfield assessment and/ or remediation
- Sites that have received US Environmental Protections Agency’s brownfields grants, loans, or entered the Targeted Brownfield Assessment Program
- Sites that have been accepted into one of the liability relief programs administered by DECD or DEEP
- Sites that have received funding through the Urban Sites Remedial Action Program
Content Last Updated November 20, 2025