The Oklahoma Department of Environmental Quality (DEQ) is a department of the government of Oklahoma under the Governor of Oklahoma. It is responsible for protecting human health and for safeguarding the natural environment: air, water, and land. DEQ is chiefly responsible for the environmental policy of Oklahoma. It is governed by a thirteen member Environmental Quality Board appointed by the Governor, which in turn appoints an Executive Director to administer the Department. The Department was created in 1993 during the term of Governor David Walters.