Mannhaupt, Jean Ellen, 64, died peacefully at home in Fayetteville, PA on March 31, 2020. Born in Manhattan and raised in Queens, she was high school sweethearts with her husband Tom. Jean and Tom settled in Long Island where they raised their children. Jean was a kitchen table community activist leading to clean water in the Mastic and Shirley area, as well as the Peconic River. She is survived by her husband Tom Mannhaupt; children Joanne Mannhaupt, Peggy (Bobby) Khoury, and Jonathan Mannhaupt; granddaughter Emersyn Khoury; siblings Frank Eckerl, Ellen Waight, and Laura Guisto; as well as a large extended family. In light of current events, a private mass will be held. A celebration of life will be held at a future date.