William E. Onimus, age 77, passed away on March 9, 2025. Born on October 13, 1947, in Philadelphia to the late William and Eleanor Onimus, he grew up in Willow Grove alongside his sister, Sandra Bray, and his brother, the late Donald Onimus.

Bill was the beloved husband of Patricia Onimus and the loving father of Brent (Kathy), Keith, and Alex (Kassy). He is also survived by his cherished grandchildren, great-grandchildren, and many nieces and nephews.

A graduate of Upper Moreland High School, Bill honorably served in the United States Air Force before building a successful career as a well-respected mechanical contractor, owning and operating Onimus Environmental Systems. He was also a talented craftsman, skillfully renovating his homes in Willow Grove and later in Horsham.

Bill found joy in maintaining his Koi pond and spending time outdoors. He was happiest on his patio, enjoying a good cigar, sipping his box wine, and listening to oldies and classic rock.

Friends and family are invited to gather from 11:00 until 11:30 on Friday, March 14, 2025 at the Heritage Chapel on the grounds of George Washington Memorial Park, followed by a Memorial at 11:30.  Bill's burial will be private.