Jon I. Monger serves as the Director of the Montgomery County Department of Environmental Protection, appointed by County Executive Marc Elrich and confirmed by the Montgomery County Council in June 2023.

Jon has dedicated his career to addressing significant environmental issues, including serving as Counsel to the presidential commission formed to investigate the 2010 Deepwater Horizon Oil Spill, White House Liaison, and policy advisor to the U.S. Environmental Protection Agency (EPA) under President Barack Obama, and as Oversight Counsel to the U.S. House of Representatives' Committee on Energy and Commerce. Prior to joining the EPA, Jon served in the administration of President Biden as Assistant Deputy Administrator of the U.S. Environmental Protection Agency, where he oversaw agency policy, management, and operational priorities. 

Jon received his B.A. from the University of Michigan and graduated magna cum laude from the Catholic University of America Columbus School of Law. During law school, he clerked for the U.S. Department of Justice Environment and Natural Resources Division and the Honorable James J. Brady of the Middle District of Louisiana. 

Jon is an avid naturalist and boater on the Potomac River and Chesapeake Bay.