Ms. Jo-Ellen Darcy was the ASA(CW) from August 2009 through January 2017. At the time of her departure, Ms. Darcy was the longest serving ASA(CW) on record. Prior to her appointment, Jo-Ellen Darcy was the Senior Environmental Advisor to the Senate Finance Committee, responsible for environment, conservation and energy issues. Previously, she was Senior Policy Advisor to the Senate Environment and Public Works (EPW) Committee, concentrating on water resource and conservation issues involving the Army Corps of Engineers and the U.S Fish and Wildlife Service, as well as nominations for presidentially-appointed positions. At the start of the 107th Congress, she was the Deputy Staff Director for the EPW Committee. From 1993 through 2000, she served as a professional staff member on the EPW Committee, working on a variety of issues, including the Safe Drinking Water Act, Army Corps of Engineers programs, FEMA, Everglades restoration and the Clean Water Act.

Before joining the EPW Committee, Jo-Ellen was legislative representative for the Investment Company Institute, the trade association representing the mutual fund industry. She worked on water resources and transportation issues for Governor Jim Blanchard of Michigan in both Lansing and Washington, D.C. Previously, she worked for the Subcommittee on Economic Stabilization of the House Banking Committee and was an elementary school teacher.

She hails from Fitchburg, Massachusetts, and has a B.A. in philosophy and sociology from Boston College and a M.S. in resource development from Michigan State University.