Underground & Site Utilities Contractor in St. Louis, MO
Sanitary, storm, water service, fire main, and grease waste — self-performed with in-house excavation from O'Fallon out to a 2-hour radius around the St. Louis metro.
Get an Underground Utility Quote
Tell us about your project — we respond within one business day.
From a clogged line to a full lateral replacement.
Our services include drain cleaning, camera inspection, line locating, and sewer and water line repair. Hydrovac capability lets us minimize excavation and disruption to your site.
Request ServiceServices
- Drain cleaning
- Camera inspection
- Line locating
- Sewer and water line repair
- Hydrovac excavation
Site Utility Work We Self-Perform Across St. Louis
From the city tap to the building entry — one trade, one schedule, one accountable contractor.
Sanitary Sewer Mains & Laterals
PVC and ductile iron sanitary tied into city mains, with manholes, cleanouts, and air-tested joints.
View Sanitary Sewer Mains & Laterals detailsStorm & Roof Drain Tie-Ins
Storm structures, area drains, and roof drain leaders connected to detention and city storm systems.
View Storm & Roof Drain Tie-Ins detailsDomestic Water Service
Copper and HDPE water service from the meter pit into the building with hot tap and bacteriological testing.
View Domestic Water Service detailsFire Service & Hydrant
Underground fire mains, post-indicator valves, and hydrants coordinated with your fire protection contractor.
View Fire Service & Hydrant detailsGrease Waste & Interceptors
Restaurant grease lines and exterior grease interceptors set, tied in, and tested for code compliance.
View Grease Waste & Interceptors detailsLift Stations & Pump Systems
Duplex and triplex lift stations, ejector pits, and oil/water separators for sites that need help moving water.
View Lift Stations & Pump Systems details
In-House Excavation Built for St. Louis Sites
When site utilities and building plumbing are run by the same crew, the slab gets poured on time and the city inspector signs off the first time. No two-trade finger-pointing.
- Owned excavators & mini-ex
- Skid steers & trench shoring
- Hot-tap & wet-tap capability
- Air-test & bac-test ready
- MSD & city water coordination
- Restoration & paving partners
Site Utility Service Across the St. Louis Region
From Survey to Sign-Off on St. Louis Sites
A predictable site-utility process built around the city inspector and your GC's schedule.
- 1
Survey & Locate
Utility locates, civil-drawing review, and coordination with the city tap.
- 2
Excavate & Install
Trench, shore, bed, and lay sanitary, storm, water, and fire mains to spec.
- 3
Tie-In & Backfill
City connections, structures set, backfill in lifts, and compaction tested.
- 4
Test & Inspect
Air, hydro, and bac testing — documented and signed off by the local AHJ.
St. Louis Underground Site Utilities — FAQs
- Do you self-perform the excavation for site utilities?
- Yes. We own and operate our own excavators, mini-excavators, and skid steers, so underground installation runs without a separate excavation sub.
- Can you coordinate with the civil engineer and city of St. Louis inspectors?
- Yes. We submit shop drawings, schedule inspections, and coordinate with MSD, city water, and local AHJs across the St. Louis metro.
- What sites have you done site utilities on?
- Restaurants, car washes, medical and dental offices, multi-unit residential, retail centers, warehouses, and industrial pads across St. Louis and St. Charles County.
- Do you handle bonding and pressure testing?
- Yes — every underground utility is pressure-tested, documented, and turned over with the inspection record so your GC has a clean closeout package.
Underground & Site Utilities Across the St. Louis Metro
Underground is where projects get won or lost. Our own excavators, locators, and pipe crews work site utilities across Wentzville, Lake Saint Louis, Florissant, Hazelwood, Webster Groves, and Kirkwood — tying into Missouri American Water and city sewer with the survey, sleeves, and as-builts the inspector expects.
Because we self-perform excavation, we don't wait on a sub to dig the trench — your sanitary, storm, and domestic water service go in with the crew that runs the building.
Don't see your city below? We work the entire metro and a 2-hour radius from O'Fallon, MO. View full service area →
St. Charles County
Warren County
For examples of this work, see Ground-Up Site Utilities (O'Fallon, MO) and Cold Storage Facility in Foristell (Foristell, MO). For planning guidance, read Underground Plumbing Before the Slab: A Commercial Coordination and Inspection Checklist.
Pricing Site Utilities for a St. Louis Project?
Get a self-performing underground bid from an O'Fallon-based contractor working across the St. Louis metro.
From Our Job Sites
