Recognizing his contributions to projects across the firm and his leadership within MRA’s utility practice, Erik F. Retzlaff, P.E., has been promoted to Associate in MRA’s Abingdon, Maryland office.

Erik serves as MRA’s Water and Wastewater Division Leader and brings more than 25 years of experience delivering utility infrastructure solutions for both public and private sector clients. His work encompasses the planning, design, permitting, and construction of drinking water production, treatment, distribution, and storage facilities and wastewater collection and conveyance systems, pumping stations and treatment facilities. He supports projects across all MRA offices while continuing to serve clients throughout the Mid-Atlantic region.

He holds a Bachelor of Science in Mechanical Engineering from the University of Delaware and is a licensed Professional Engineer in Delaware, where he also maintains certification as an On-Site Wastewater Designer. Erik has been actively involved in the engineering community serving on the Council for the Delaware Association of Professional Engineers, and on the Board of Directors for the Delaware Chapter of the American Public Works Association.

Throughout his career, Erik has guided complex utility projects from early evaluation through final construction and system startup. His experience includes leading comprehensive system-wide drinking water utility improvements projects for the City of New Castle and Town of Georgetown, Delaware, involving production well, treatment and storage facility and distribution system enhancements along with monitoring, efficiency and controls systems integration. He provided engineering services for the Ridgely’s Reserve Water Booster Station in Harford County, Maryland, where his approach to booster station design influenced current County standards. In addition, he managed the design and construction of the James Run and Southfields of Elkton sewage pumping stations and discharge force mains, supporting significant mixed-use developments through coordinated system expansion and hydraulic modeling.

Erik is recognized for his ability to evaluate complex utility challenges and develop simple, cost-effective solutions that align with project goals, regulatory requirements, and long-term system performance. His leadership and technical expertise continue to strengthen MRA’s delivery of reliable water and wastewater infrastructure designs for our clients.