Brian Hageman,
LEED AP

Brian is a leading expert in healthcare plumbing and medical gas systems, known for innovative approaches that improve safety, sustainability, and long-term performance. His work includes pioneering large-scale graywater and water reuse systems in acute care settings and advancing single temperature handwashing strategies that reduce pathogen risk. 
 
He brings deep expertise across domestic and pure water systems, industrial water, sanitary and storm drainage, and the full suite of medical gas systems. Clients value his clarity, leadership, and ability to elevate facility performance with forward-thinking yet practical strategies. His insights have shaped major healthcare projects and informed global best practices, including co-authoring construction guidelines for Liberia. Brian is also a frequent industry presenter on waterborne pathogens and high-risk plumbing systems, and his contributions to ICC initiatives have strengthened international standards. 
 
Brian’s work directly supports Mazzetti’s Benefit Mission through solutions that reduce water and energy use, enhance public health outcomes, and improve system resilience.