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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Long Island Sound is Connecticut’s largest and most important natural resource.
General Pretreatment Permit for Non-SIU User -11/12/25
Notice of General Permit Reissuance for the General Pretreatment Permit for Non-Significant Industrial User Discharges to Publicly Owned Treatment Works.
General Information on Site Clean-up in Connecticut
Links to additional information about remediation and contaminated sites in Connecticut.
Connecticut's Energy Efficiency Initiatives
Overviews for major species groups
Adjudications - Permit Cases - Proposed and Final Decisions
The Office of Adjudications conducts public hearings and issues written decisions on permit applications and enforcement proceedings.
(HARTFORD) — The winter holiday season is upon us, and the Connecticut Department of Energy and Environmental Protection (DEEP) is celebrating with the festive transformation of two of its historic buildings: Gillette Castle in East Haddam and Osborne Homestead Museum in Derby. Enjoy the wonderous atmosphere created by special decorations that help set the tone for holiday cheer.
Connecticut Celebrates the New Year with First Day Hikes on Jan. 1
(HARTFORD) — The Connecticut Department of Energy and Environmental Protection (DEEP) and its partners are encouraging folks to get outside on New Year’s Day. Walk, hike, and enjoy nature safely on January 1st by joining our many volunteer state park friends groups as Connecticut celebrates First Day Hikes, a nationwide initiative to get outdoors.
Antique Clocks and Household Gadgets
Did you know there was a time when Connecticut was the clock capital of the United States!?
Fall Archery Deer and Turkey Seasons Open September 15
The Connecticut Department of Energy and Environmental Protection (DEEP) reminds sportsmen that the 2018 fall archery hunting season for deer and wild turkey opens on September 15.
Municipal Inland Wetlands Agency Continuing Education Training: Legal and Administrative Updates
Municipal Wetland Agency Continuing Education Workshop materials
Family and Youth Resources
Information about the requirements for biomedical waste in Connecticut.