Commercial Plumbing in Marthasville, MO
Marthasville owns and operates its own water and sewer systems. Legacy Plumbing serves Marthasville with commercial plumbing and select residential service. In Marthasville, on Hwy 94 and Hwy 47, we typically handle winery and school plumbing.
Free Estimate — Marthasville
Same-business-day response from our O'Fallon office.
Water, sewer & site infrastructure in Marthasville
Public facts from government and utility sources, not Legacy Plumbing project claims.
- Water and sewer are city-owned systems (Marthasville WWTF, MO0044113). City of Marthasville
- New water and sewer hookups require a City Water & Sewer Connection Permit filed at City Hall. City of Marthasville
Public sources checked 2026-10-30
Getting crews and materials to Marthasville
Marthasville sits in Warren County, MO, roughly 23 straight-line miles from our O'Fallon shop; the closest towns we also serve are Innsbrook (about 10 mi), Augusta (about 10 mi) and New Melle (about 11 mi). Legacy Plumbing has worked as a UA Local 562 signatory commercial plumbing contractor in St. Louis since 1996.
Licensed to pull plumbing permits in Marthasville
Legacy Plumbing has master plumbers on staff and holds the licensing to pull plumbing permits in the jurisdiction covering Marthasville in Warren 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.
Site, water and service plumbing for Marthasville
Underground & site utilities
Sanitary, storm and water service connections for new Marthasville sites.
Explore underground & site utilitiesBackflow install & testing
Annual backflow testing, with reports sent to Marthasville's water provider.
Explore backflow install & testingService & repair
Scheduled repairs, water heaters and drain work for Marthasville properties, plus select residential calls.
Explore service & repairTenant build-outs
Suite plumbing for new tenants in Marthasville.
Explore tenant build-outsLegacy Plumbing projects in and near Marthasville
Our closest documented work to Marthasville is in Foristell, within about 14 straight-line miles — cold storage distribution center and dental practice expansion. Distances are straight-line between town centers.
- Near Marthasville — Foristell, ~14 mi
Cold storage distribution center
Foristell
New industrial building where we ran site utilities and underground rough-in around cold-storage slab pours, then set floor drains, backflow and water heating on a fast-track schedule.
View project scope - Nearest recent project — Wentzville, ~17 mi
Dental practice expansion (2020)
Wentzville
Five new treatment rooms with nitrous oxide, oxygen, air and vacuum, a sterilization area and an ADA restroom rework in an operating practice.
View project scope
Nearby areas we serve
Need a Plumber in Marthasville?
Call 636-978-0120 or request your free estimate — we respond same business day across Warren County.