Our Background

Glenn Engineering and Associates, Ltd., is a firm of consulting engineers that has specialized in municipal and environmental engineering since 1978. Our founder, Donald M. Glenn, P.E., realized that the many municipalities clustered in the unique landscape of southwestern Pennsylvania needed an economical, accessible, local source of infrastructure-related engineering expertise.

Since then, Glenn Engineering has grown from an office representing two municipal clients to an organization that works with a client list of 21 municipalities, three authorities, three councils of governments, and several private agencies. David W. Gilliland, P.E, and Susan A. Glenn acquired the firm from Don Glenn in 2007. Don maintains an active role with Glenn Engineering. In 2017, Ms. Glenn retired and sold her half of the business to Mr. Gilliland.

Our clients rely on our expertise in managing water distribution systems; wastewater treatment facilities and pump stations; sanitary and storm sewer systems; stormwater detention facilities; roads and bridges; park and recreation facilities; and many other infrastructure elements. We consult, advise, and assist municipal governments in dealing with regulatory issues (including wastewater consent order and decree matters), fiscal budgets, annual reports, grant applications, and bond issues. At our North Huntington office, we maintain full drafting capabilities, with several complete computer-aided drafting and design stations equipped with Auto-CAD and GIS and GPS capabilities, plus an array of advanced hardware and software systems.


Ask any of our long-established clients, and they’ll tell you that we work exceptionally hard to maintain relationships based on stability, trust, responsiveness, and personal attention. Our technical expertise is second to none, and our specialization in municipal and environmental engineering makes us the logical choice when local governments look for first-hand knowledge of their communities, and for economical solutions to difficult challenges.

14920 State Route 30
North Huntingdon, PA 15642-1073
p: 412-824-5672
f: 412-824-9587

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