Search for properties where releases have occurred and track environmental cleanup progress. REACT contains documents that are uploaded by environmental professionals. Documents submitted before February 2026 can be found in the Online Document Search Portal below. See REACT Resources below for instructions.

The Release-Based Cleanup Regulations (RBCRs) describe requirements to report, characterize, and cleanup releases, as well as compliance measures and closure reporting requirements. The RBCRs incorporate the Remediation Standard Regulations.

Links for programs, various contaminated site lists, information about chemicals and pollution, home heating oil tank maintenance and leaks, and private drinking water wells.