Preventative Maintenance Services
Scheduled inspections and service agreements that keep commercial plumbing running and prevent emergency calls.
Service Division
Commercial Plumbing Services in St. Louis, MO
From water heaters and backflow certifications to lift stations, medical gas, and process piping — Legacy Plumbing services commercial, industrial, and healthcare buildings across St. Louis, St. Charles County, and Jefferson County.
Our Commercial Plumbing Services
Licensed technicians and UA Local 562 crews handle repairs, replacements, and new installs for facility managers, property owners, and general contractors.
Backflow Preventer Installations, Repairs & Certifications
Certified testers install, repair, and annually certify backflow assemblies, with results filed with the water authority.
Primary & Secondary Drain Cleaning / Hydro Jetting
Mechanical cleaning and hydro jetting for main and branch drain lines in commercial and industrial buildings.
Camera Inspections & Locates for Drain Lines
Video inspection and line locating to find breaks, bellies, and blockages before digging.
Plumbing Fixture Install, Repairs & Replacements
Water closets, urinals, lavatories, sinks, flush valves, and faucets for offices, schools, and healthcare facilities.
Domestic Water Heater Installs, Repairs & Replacements – Gas & Electric
Commercial gas and electric water heaters, sized and installed to code, with repair service to restore hot water fast.
Domestic Hot Water Storage Tank Installs, Repairs & Replacements
Storage tanks for high-demand hot water systems, replaced with minimal downtime.
Domestic Hot Water Tempering / Mixing Valves
Install, repair, and adjust thermostatic mixing valves to keep water at safe, consistent temperatures.
Smoke Testing of Waste & Vent Systems
Smoke testing to track down sewer gas odors and failed or open waste and vent piping.
Gas Piping Installs, Repairs & Replacements
Natural gas piping for equipment, water heaters, and kitchens, including leak repair and pressure testing.
Drain, Waste & Vent Installation, Repairs & Replacements
DWV piping installs and replacements for renovations, tenant finish, and failed systems.
Sanitary Sewer Drain Repairs & Replacements
Repair and replacement of sanitary sewer lines inside and outside the building.
Storm / Roof Drain Installs, Repairs & Replacements
Roof drains, storm piping, and overflow drains installed and repaired to protect your building.
Confined Space Entry – Storm & Sanitary Lift Stations
Trained confined space crews install, repair, and replace storm and sanitary sewer lift stations.
Medical Gas Piping & Systems
Medical gas piping for hospitals, surgery centers, and dental offices.
High Purity / Process Piping
High purity and process piping for industrial, laboratory, and manufacturing facilities.
Commercial Plumbing Service Near You
We dispatch service trucks to commercial buildings throughout the St. Louis metro, including:
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