Ella Filippone contributed to the protection of the Passaic River Watershed of New Jersey for over 43 years. As founder of the Passiac River Coalition, established in 1969, she led efforts to clean up the river and preserve over 1500 acres of surrounding land.
Ella successfully lobbied the proposal of a flood tunnel along the Passaic River, by the U.S Army Corps of Engineers. She also worked to preserve the Sterling Forest, which feeds the Wanaque Reservoir and other New Jersey water sources, and advocated as the New Jersey chairwoman of the Greenwood Lake Commission to uphold funding for the removal of weeds from that lake. Her creativity, determination, and leadership have helped shape the restoration of these areas to their original and natural state.