The mission of the Oklahoma Department of Environmental Quality is to enhance the quality of life in Oklahoma and protect the health of its citizens by protecting, preserving and restoring the water, land and air of the state, thus fostering a clean, healthy, and sustainable environment.
Mailing Address: P.O. Box 1677 Oklahoma City, OK 73101-1677
Street Address: 707 N Robinson Oklahoma City, OK 73102
Main DEQ Phone Number: 405-702-0100Fax: 405-702-1001
Customer Assistance Program 1-800-869-1400
24-Hour Emergency Response & Environmental Complaints Hotline 1-800-522-0206