Bill Callegari holds a BS from Louisiana State University and an MS Civil Engineering from the University of Houston. He has been a Licensed Professional engineer for over 50 years. He also holds “Double A” Certifications in water and wastewater operations. Early in his career, he served as design engineer and project manager for water and wastewater facilities. In 1974 Mr. Callegari founded AM-TEX Corporation, which provided operations and management services to utility districts and municipalities throughout Texas. As President and CEO, he pioneered AM-TEX's growth as a major force in the state and national water industry. He currently owns WC Engineers, which provides engineering consulting services for municipal and commercial projects, water and wastewater system planning and design, and coordination and management of public infrastructure. Over his career, he was involved in the design, development, and operation of several major residential and commercial projects in the Houston area, including The Woodlands, Kingwood, Copperfield, Fairfield, Cinco Ranch, Atascocita, Clear Lake City and many others. He has participated in engineering and operations for hundreds of utility districts and cities in Texas, Florida, Colorado, and New England. Subsequent to selling AM-TEX in the mid 1990’s, he served as President of major national and international water companies. During his professional career Mr. Callegari founded the Association of Water Board Directors, and served in leadership positions in several community and professional organizations and boards. Mr. Callegari served as a member of the Katy ISD Board of Trustees in the 1980’s. He was elected to the State Legislature in 2000, representing Katy & Cypress in West Harris County for fourteen years. As a State Representative he was considered by many as the House of Representatives' leading water expert.

Mr. Callegari is a member of both the LSU and the University of Houston College of Engineering Halls of Distinction as well as the LSU Alumni Hall of Distinction and the LSU Alumni Center Wall of Honor. His legacy at LSU is recognized thanks to the William A. Callegari Environmental Center on the LSU campus named in his honor. Callegari is proud to have been named as a Distinguished Engineer and a “Fellow” by the Texas Engineering Foundation. He was also honored by TSPE with the “George Washington Citizen Engineer Award”.