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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Learn about the Asian longhorned beetle, a current threat from which CT's trees need protection.
UST Registration, Compliance & Release Prevention
Underground Storage Tank Notification, Compliance and Release Prevention. Fact sheets, guidance, UST regulations, Red Tag Program, Compliance inspection program, ezFile notification, and alternate life expectancy.
Overview - Emergency Response and Spill Prevention Division
Emergency Response Unit Overview
Policies, Procedures and Guidelines
Policies, procedures and guidelines for the CT DEEP Office of Adjudications.
Local ordinances create incentives and encourage recycling of construction and demolition (C&D) waste, which can improve a community’s overall recycling rate.
Background of the LIS License Plate Program and LIS Fund Projects
Letterboxing Clues for Algonquin State Forest
Algonquin State Forest letterbox clues in CT
Belding Wildlife Management Area
Learn about wildlife and habitat at Belding Wildlife Management Area.
Connecticut Equity and Environmental Justice Advisory Council (CEEJAC)
New York Power Authority-Brentwood Plant, Islip NY
Notice of tentative determination to approve an application to renew the Air Title IV and V permits for New York Power Authority, Brentwood Plant in Islip NY. Written comments are due by June 22, 2026.
Links to the various online newsletters published by CT DEEP.
Wildlife Highlights Newsletter
Wildlife Highlights is your best source for up-to-date wildlife information in Connecticut.
(HARTFORD, CT) – On Thursday, May 14, the City of Groton will show off its newly installed porous concrete at Washington Park, utilizing federal Clean Water Act Section 319 Grant funds the Eastern Connecticut Conservation District (ECCD) received through the Connecticut Department of Energy and Environmental Protection (DEEP) to improve water quality of Birch Plain Creek.
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.
Recycling
Connecticut disposes of 2.4 million tons of trash annually, an estimated 1,370 pounds of trash per person per year. That's too much! Learn more about how we manage our waste and how to help us move toward more waste reduction, reuse and recycling.
DEEP Programs & Services
DEEP conserves, improves and protects Connecticut's natural resources and the environment, and makes cheaper, cleaner and more reliable energy available to people and businesses. Find DEEP's programs and services here.