# Ground-Up Site Utilities Project

> Ground-Up Site Utilities; O'Fallon, MO; Site Utilities — Underground; Sanitary sewer service and lateral tie-ins.

Canonical: https://legacyplumbingmo.com/projects/ground-up-site-utilities-ofallon-mo
Last updated: 2026-10-08

[All Projects](https://legacyplumbingmo.com/projects) Site Utilities — Underground

Self-Performed Sanitary, Storm, Water Service & Grease Waste on a New Commercial Pad

O'Fallon, MO Sector: Site Utilities

## Project Overview

| Location | O'Fallon, MO |
| --- | --- |
| Building type | Site Utilities |
| Scope | Site Utilities — Underground |

Legacy Plumbing partnered with the general contractor on a ground-up commercial pad in O'Fallon, Missouri. All site utilities — sanitary, storm, domestic water service, and grease waste — were self-performed by UA Local 562 crews.

On a ground-up pad, site utilities set the schedule for everything that follows. The sanitary sewer service and lateral tie-ins, storm drainage and detention connections, and domestic water service with backflow prevention all had to be in and inspected before vertical construction could start.

The scope also included grease waste and interceptor plumbing, installed with the rest of the site utilities. As-built survey coordination with the general contractor documented where each utility was installed.

This work was self-performed by UA Local 562 crews in O'Fallon, near Legacy Plumbing's own O'Fallon office. It is the same underground and site utilities scope offered on commercial pads across St. Charles County.

This project is an example of our [underground & site utilities](https://legacyplumbingmo.com/commercial/underground-site-utilities) work, with scope that also falls under [grease trap service](https://legacyplumbingmo.com/facility-services/grease-trap-cleaning) . See more of our [the industries we serve](https://legacyplumbingmo.com/who-we-serve) and our coverage for [commercial plumbing in O'Fallon, MO](https://legacyplumbingmo.com/locations/ofallon) . For planning tips, read [Underground Plumbing Before the Slab: A Commercial Coordination and Inspection Checklist](https://legacyplumbingmo.com/resources/underground-plumbing-before-the-slab-checklist) .

## Scope of Work — O'Fallon, MO

- Sanitary sewer service and lateral tie-ins
- Storm drainage and detention connections
- Domestic water service with backflow prevention
- Grease waste and interceptor plumbing
- As-built survey coordination with GC

### Outcomes for the Owner & GC

- Pad turned over on schedule for vertical construction
- Clean utility inspections through municipal review
- Referral partnership continued on follow-on pads

### Project Snapshot

- **Location:** O'Fallon, MO
- **Sector:** Site Utilities
- **Type:** Site Utilities — Underground

Site Work Underground GC Partnership [Request a Similar Bid](https://legacyplumbingmo.com/contact-us) [Call Estimating](tel:+16369780120)

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## Related
- [Contact Legacy Plumbing](https://legacyplumbingmo.com/contact-us)
- [Company facts](https://legacyplumbingmo.com/company-facts)
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