Mr. Hill assumed his current position at EPA in 2015, where he provides executive leadership for EPA’s programs partnering with sovereign Tribal and foreign nations to protect human health and the environment in federal Indian Country and around the world. Prior to that, he held a variety of senior leadership positions at EPA, including serving as a Judge on EPA’s Environmental Appeals Board, Deputy Director of the Office of Civil Enforcement managing EPA's civil enforcement of the major environmental statutes, and Deputy Director and Acting Director of the Office of Wastewater Management leading EPA’s clean water permitting and wastewater infrastructure programs. Mr. Hill also spent over sixteen years in EPA’s Office of General Counsel serving as the agency’s national legal expert for many issues under the Clean Water Act, Safe Drinking Water Act, and RCRA. He has taught environmental law at Tulane University and Catholic University of America, and public administration at the University of Maryland, University College, where he is a past finalist for the Excellence in Teaching Award. Mr. Hill obtained his JD and Master of Public Policy degrees from the University of California, Berkeley, where he was elected to the Order of the Coif.