About DDOE The District Department of the Environment (DDOE) is responsible for the natural and indoor environments in the District of Columbia. DDOE’s work includes direct assistance to residents and businesses, policymaking, and monitoring and enforcement. DDOE is a relatively new agency, formed in 2006 from the Department of Health's Environmental Health Administration, the DC Energy Office, policy functions of the DDOT Urban Forestry Administration and policy functions of the DPW Office of Recycling. DDOE programs are designed to facilitate cleaner air and water, green our neighborhoods and building space, and assist with the management of hazardous and toxic waste disposal. Additionally, DDOE conducts community and educational outreach to increase public awareness of environmental and energy related issues. District Department of the Environment Establishment Act of 2005* DDOE Mission Statement DDOE Director's Biography FOIA Requests For the Press How to Reach Us Ask the Director Director's Order: DDOE Transportation Policy*