(636) 204-7230
O'Fallon, MO
Everyday: 9AM - 5PM

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Fast response times and clear communication

Ready When You Need Us

Reach out today and let our licensed professionals handle the job.
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From simple repairs to complete installations.

Comprehensive Plumbing Services

We handle residential and commercial plumbing with precision and care.
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Real projects. Real results.

See Our Work

Take a look at the quality work we’ve completed across the St. Louis area.
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30+ Years of Experience

With over three decades in the plumbing industry, we bring unmatched knowledge and proven solutions to every job.

2nd Generation Plumbers

Our family-run business now serves its second generation — passing down quality, pride, and craftsmanship.

Fast, Reliable Support

We take pride in our quick response times, dependable communication, and hassle-free service from your first call to final inspection.

Our Services

Quality Service is Our Guarantee

Water Softeners
We install and service water softeners to help reduce hard water buildup in your home or business.
Fixture Replacement
Whether it’s a sink, toilet, or faucet, we provide expert replacement of old or broken fixtures.
Sewer & Water Line Repair
We handle sewer and water line issues quickly to prevent further damage or costly repairs.
Drain Cleaning
Our team uses proven methods to remove clogs and restore smooth flow to your plumbing system.
Water Heater Replacement
We replace faulty or outdated water heaters with efficient and reliable new systems.
General Plumbing Repairs
From leaks to broken pipes, we handle all kinds of plumbing repairs with lasting solutions.
New Construction Plumbing
We provide full plumbing system installation for new homes, buildings, and remodels.
Residential Plumbing
Our team delivers trusted plumbing solutions for homeowners across the St. Louis area.
Commercial Plumbing
We offer expert plumbing services tailored for businesses and commercial properties.
About Us

Plumbing is what we do

At Authority Plumbing & Drain, we provide expert plumbing services for homeowners and businesses throughout St. Louis and surrounding counties. From repairs and installs to new construction, we’re equipped to handle all your plumbing needs.

Licensed plumbers
Fixture replacement
Fast response times
New construction installs
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Our Work

Our Latest Projects

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Bathtub Installation
Bathroom Installation
Bathroom Installation
Sink Installation
Plumbing Rough-In
Drain Line Repair
What our clients think

Our Testimonials

They were on time and very professional. They diagnosed the problem, explained how they would fix it and the work was done well. This was our first time using Authority Plumbing! We will definitely be calling them again!
Jill H.
Happy Client
Authority Plumbing & Drain stood behind their work and repaired a water line that started leaking when we opened it to water the grass. They were prompt, friendly and efficient. I would recommend Authority Plumbing & Drain.
Diane W.
Happy Client
I used them for my basement and they did an amazing job. They made it a great experience. They fixed every leak, placed the new pipes and even added a new drain for me! Absolutely will use them again and recommend them to everyone!!!
Zachary K.
Happy Client
We have not used them yet but oh my goodness they were so friendly and professional. Jeannie was so great to talk to and answered all my questions quickly and was very straight forward. I think everyone should give them a call to have the same great experience.
Benjamin R.
Happy Client