# Union Plumbing Contractor in St. Louis

> Legacy Plumbing is a UA Local 562 signatory commercial plumbing contractor in St. Louis. Union-trained journeymen and apprentices since 1996.

Canonical: https://legacyplumbingmo.com/union-plumbing-contractor-st-louis
Last updated: 2026-10-28

UA Local 562 · Since 1996

Legacy Plumbing has been a UA Local 562 signatory commercial plumbing contractor since 1996, working from our headquarters at 811 N Main St in O'Fallon, MO, across the St. Louis metro.

[Send Plans for a Bid](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120)

## What Union Signatory Means for Your Project

### Apprenticeship Training Pipeline

UA Local 562 apprenticeship brings registered apprentices up through structured training alongside our journeymen.

### Certified Journeymen

Crews are led by certified journeymen who have completed union training before they run work on your job.

### Manpower That Scales

When a schedule compresses, we can add manpower through the hall instead of asking the GC for more float.

## Who Typically Needs a Union Plumbing Sub

### GCs on Union-Labor Projects

General contractors whose project calls for union trades on every scope, including plumbing.

### Schools & Institutional Owners

School districts and institutional owners that prefer or require union-trained crews on their buildings.

### Developers with Union Requirements

Developers whose owners or lenders require union labor on the project.

Bidding a project? See our [general contractor page](https://legacyplumbingmo.com/general-contractors) or all [commercial plumbing services](https://legacyplumbingmo.com/commercial-plumbing-services) .

## Credentials

Legacy Plumbing is a governing member of MCA of Eastern Missouri.

Explore union-shop roles: [estimator](https://legacyplumbingmo.com/careers/commercial-plumbing-estimator) , [chief estimator](https://legacyplumbingmo.com/careers/chief-estimator) , [project manager](https://legacyplumbingmo.com/careers/plumbing-project-manager) , [foreman](https://legacyplumbingmo.com/careers/commercial-plumbing-foreman) and [journeyman plumber](https://legacyplumbingmo.com/careers/journeyman-plumber) careers.

| Union | UA Local 562 signatory |
| --- | --- |
| Licensing | Missouri & Illinois master plumbers |
| Bonding | $5M single / $10M aggregate |
| Safety | OSHA 30 trained field leadership |
| Association | MCA of Eastern Missouri member |

Project Proof

## Recent Project Examples

Education

### School Plumbing Renovation in St. Charles

St. Charles, MO

Restroom group renovations with ADA-compliant fixtures; Domestic water and sanitary re-routing for classroom additions

View project scope Industrial / Cold Storage

### Cold Storage Plumbing in Foristell

Foristell, MO

Site utilities: sanitary sewer, storm, and domestic water service; Underground plumbing rough-in coordinated with cold-storage slab pours

View project scope Industrial

### Manufacturing Facility Plumbing in St. Peters

St. Peters, MO

Domestic water service and interior distribution; Sanitary drainage and trench drains for the production floor

View project scope [View all projects](https://legacyplumbingmo.com/projects)

## Site Work Referrals: Kuesel Excavating Co.

Kuesel Excavating Co. is an independent site contractor we refer to. Kuesel — union with IUOE Local 513, UA Local 562 and LIUNA — handles excavation and site utilities, while Legacy Plumbing handles the plumbing.

[Visit Kuesel Excavating](https://kueselinc.com) FAQ

## Union Plumbing Contractor — FAQs

- **Is Legacy Plumbing a union contractor?:** Yes. Legacy Plumbing is a UA Local 562 signatory contractor.
- **What is UA Local 562?:** UA Local 562 is the plumbing trades union local covering the St. Louis area.
- **Do union plumbers cost more?:** The labor rate is set by the collective bargaining agreement, so it is the same for every signatory contractor. Union training, productivity and safety help offset that rate over the life of a project.

## Send Plans for a Bid

Send drawings, specs or an ITB. We return written bids within one business day.

[Send Plans](https://legacyplumbingmo.com/contact-us)

## Need a Plumber in St. Louis or the Surrounding Area?

Written bids within one business day, scheduled service Monday–Friday 7am–4pm, and union-trained crews since 1996 across the St. Louis metro and a 2-hour radius.

[Get Free Estimate](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120)

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