Commercial Plumbing in Florissant, MO
Florissant issues its own commercial plumbing permits. Legacy Plumbing serves Florissant with commercial plumbing and select residential service. Legacy Plumbing completed an outpatient dialysis clinic in Florissant, including station-box piping from the water room, temperature-controlled lavatories and clinical drainage.
Free Estimate — Florissant
Same-business-day response from our O'Fallon office.
The Florissant permit and inspection process
Public facts from government and utility sources, not Legacy Plumbing project claims.
- The Florissant Public Works Building Division requires permits for plumbing work, including water heater replacement. City of Florissant
- MSD's Florissant/Dunn Sanitary Relief (St. Anthony Ln to I-270) replaced about 6,170 ft of sewer, benefiting an estimated 2,185 properties. MSD Project Clear
- Water is Missouri American Water; sewer is MSD. City of Florissant
Public sources checked 2026-10-30
Legacy Plumbing projects in and near Florissant
We have 1 documented project in Florissant itself and 6 more elsewhere in St. Louis County, covering outpatient dialysis clinic, multi-operatory dental office, middle school renovation and dental surgical center. Distances are straight-line between town centers.
- In Florissant
Outpatient dialysis clinic (2021)
Florissant
Healthcare build-out with clinical drainage — floor drains, floor sinks and a trench drain — plus eyewash stations and a 2-inch main backflow preventer.
View project scope - Near Florissant — Hazelwood, ~3 mi
Multi-operatory dental office
Hazelwood
Dental tenant finish with full rough-in across operatories, sterilization and lab, plus NFPA 99 medical gas and dental vacuum that passed third-party certification on the first pass.
View project scope - Near Florissant — St. Charles, ~9 mi
Middle school renovation
St. Charles
Interior additions and remodeling on an active school campus — ADA restroom groups, re-routed water and sanitary for classroom additions, and kitchen grease waste tie-ins, phased around the school calendar.
View project scope - Near Florissant — Richmond Heights, ~11 mi
Dental surgical center (2024)
Richmond Heights
Clinical plumbing with plaster traps, 12 floor drains, hub drains and cleanouts, plus a grinder lift station and sump pump.
View project scope
Services matched to Florissant's permit process
Service & repair
Scheduled drain, lateral and water heater repairs in Florissant, where MSD has worked on undersized sewers.
Explore service & repairCommercial water heaters
Water heater replacement in Florissant, permitted through the city's Building Division.
Explore commercial water heatersGround-up new construction
New commercial buildings in Florissant, plan-reviewed by the city.
Explore ground-up new constructionBackflow install & testing
Annual testing and assembly replacement for Florissant buildings.
Explore backflow install & testingDocumented project work in Florissant & nearby
Bidding and building in Florissant
Florissant sits in St. Louis County, MO, roughly 20 straight-line miles from our O'Fallon shop; the closest towns we also serve are Hazelwood (about 3 mi), Bridgeton (about 6 mi) and Maryland Heights (about 8 mi). Legacy Plumbing has worked as a UA Local 562 signatory commercial plumbing contractor in St. Louis since 1996, and the St. Louis plumbing hub covers the wider area.
Licensed to pull plumbing permits in Florissant
Legacy Plumbing has master plumbers on staff and holds the licensing to pull plumbing permits in the jurisdiction covering Florissant in St. Louis County, as in every other St. Louis–area jurisdiction we serve — St. Louis City, St. Louis County and its municipalities, St. Charles County and Jefferson County.
Florissant Plumbing Questions
- Have you completed healthcare plumbing in Florissant?
- Yes. Our outpatient dialysis clinic scope included piping from the water room to each station box, 14 lavatories with thermostatic mixing valves, floor drains and sinks, and a gas water heater with circulation pump.
- Who issues commercial plumbing permits in Florissant?
- The Florissant Public Works Building Division requires permits for plumbing work, including water heater replacement.
Nearby areas we serve
Need a Plumber in Florissant?
Call 636-978-0120 or request your free estimate — we respond same business day across St. Louis County.