Climate Change
Addressing climate change presents residents, businesses, nonprofits, and municipalities a chance to create, evolve, and maintain a sustainable environment, a robust economy, and a higher quality of life today and tomorrow.
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Nitrogen Control Program for Long Island Sound
Each summer, the bottom waters in the western half of Long Island Sound experience hypoxia, or very low levels of dissolved oxygen. Extensive monitoring and modeling of Long Island Sound have identified the excessive discharge of nitrogen from human activities as the primary pollutant causing hypoxia. Nitrogen fuels the growth of algae in the Sound, which eventually decays, consuming oxygen in the process. There is enough nitrogen added by human activity to cause a hypoxia problem each summer.
Combined Sewer Overflows: Right to Know
CSO Right-to-Know
PFAS is an emerging contaminant affecting wastewater treatment plant effluent in the state of CT. This information is to inform of sampling that has been completed, possible future effluent limits for municipal wastewater treatment plants in CT and approved sampling techniques.
NDDB Species Observations via Survey123
Questions and answers on how to submit listed species observations to the Natural Diversity Data Base via Survey123.
The DEEP is interested in obtaining new and updated information on critical natural resources from Connecticut's citizens.
Requests for NDDB Environmental Reviews
DEEP performs hundreds of environmental reviews each year to determine the impact of development projects on state-listed species and to help landowners conserve the state's biodiversity.
Licensed Environmental Professional (LEP) Verification Audit Program
The purpose of the Licensed Environmental Professional (LEP) Verification Audit Program is to ensure that the opinions ("verifications") of the LEP are based on an appropriate understanding of the environmental conditions of the site and that the verification is in compliance with all applicable statutes and regulations, including the Remediation Standard Regulations (RSRs).
Release-Based Cleanup Legislative Authorization and Background
2024 LEP Board Meeting
Emergency and Non-Emergency EUR Releases
Provides information on obtaining Emergency and Non-Emergency Releases from Environmental Land Use Restrictions and Notices of Activity and Use Limitation.
Reducing and Preventing Releases of PFAS-Containing Firefighting Foam
One of the key pollution prevention recommendations in the State’s PFAS Action Plan was to discontinue use of PFAS-containing firefighting foam where possible. This page describes requirements of the 2021 Act Concerning the Use of Perfluoroalkyl or Polyfluoroalkyl Substances in Class B Firefighting Foam, which includes efforts to develop a 'take back' program to recover PFAS-containing firefighting foam from municipalities, to identify PFAS-free foam replacements, and to develop guidance for decontaminating fire apparatus that previously contained PFAS-containing foam.
Per- and Polyfluoroalkyl Substances (PFAS)
DEEP's main PFAS page which contains links to various webpages related to per- and polyfluoroalkyl substances (PFAS).