William C. Trefz, age 96, of Allison Park, on Thursday, August 20, 2020. Bill, born in Rockford, IL, graduated from West Point and earned a Master’s Degree in Civil Engineering from the University of Illinois. He was a licensed Professional Engineer and a member of several Military, Engineering, and Environmental organizations. Bill and his late wife Helen originally of Greenville, PA, met in Germany where they were married in 1948. His Army career took them to Germany for four years, Italy for three years, and Thailand for two years. From these locations they visited numerous other countries. Bill also served two one-year Asian duty tours. Following his 1975 retirement as a Colonel in the Army Corps. Of Engineers, he began a second career in Pittsburgh with ALCOSAN, first as Chief Engineer from 1976-1987 and then as Executive Director until his second retirement in 1996. Bill is preceded in death by his wife Helen (Galus) Trefz, and his siblings, Clair Trefz and Marilyn Trefz. He is survived by many loving nieces and nephews. Services and internment will be held privately by the family. Burial will be held with Military Honors in St. Michaels Cemetery, Greenville, PA. In lieu of flowers, donations may be made to a charity of your choice. Arrangements made by the Bock Funeral Home, Ltd., Glenshaw.
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