SERVING FOR OVER 130 YEARS

Trusted Plumber in O’Fallon, MO | Family-Owned & Union-Trained Since 1894

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WHY CHOOSE KOKESH PLUMBING?

Reliable & Trustworthy Plumbing Service

O’Fallon covers a lot of ground, and the plumbing picture varies a lot depending on which part of town you’re in. Older homes near downtown and Bryan Road have a different set of considerations than a newer build in one of the subdivisions off T.R. Hughes or Veterans Memorial Parkway. What doesn’t change is what you need from a plumber: someone who looks at what’s actually in front of them, gives you a straight read, and tells you what the job requires, not what generates the biggest invoice. That’s been the Kokesh way since 1894. Our union-trained, licensed plumbers serve O’Fallon and the surrounding St. Charles County area, and we’ll give you the honest answer whether you’re dealing with a 1970s ranch or a home that was built last decade. Call 636-391-1233.

PLUMBING SERVICES

O’Fallon, MO

O’Fallon was founded in 1856 by German immigrant brothers Arnold and Nicholas Krekel. Arnold bought the land and plotted the town, and Nicholas built the first house and ran a store out of it. They named it after John O’Fallon, president of the North Missouri Railroad, whose line running through the property was the whole reason they were there. The city incorporated in 1912 with 600 people. It now has close to 80,000, making it one of the largest cities in Missouri and one with national acclaim. Money Magazine ranked it among the 100 Best Places to Live multiple times between 2006 and 2019.

Veterans Memorial Parkway and T.R. Hughes Boulevard carry most of the traffic today, connecting newer subdivisions on the city’s expanding edges to the older core near Main Street and Bryan Road. That range of construction eras, from mid-20th century homes near downtown to brand-new builds on the western fringe, means plumbing needs vary widely from one neighborhood to the next. Kokesh Plumbing proudly serves homeowners and businesses throughout O’Fallon, MO, providing expert plumbing services for everything from routine repairs to full plumbing emergencies.

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Our O’Fallon Plumbing Services:

Kokesh Plumbing offers a comprehensive range of services to our customers in the 63366 and 63368 area. Below, you’ll find some of the most sought-after services in O’Fallon, Missouri. Don’t see what you’re looking for? Take a look at our Residential Services Page to see a more complete list, or give us a call at 636-391-1233 to talk through any service you are looking for!

Water Heater Installation & Repair

Waking up to no hot water is one of the most disruptive plumbing problems a homeowner can face. Whether your water heater is leaking, making strange noises, running out of hot water too quickly, or simply aging past its useful life, Kokesh Plumbing can help. We install and service all water heater types, including traditional tank units, tankless on-demand systems, and hybrid heat pump models, for both gas and electric setups. Homeowners often ask us whether a tankless water heater is worth the investment. In many cases, yes! They deliver endless hot water and lower energy bills over time. If you’re not sure whether to repair or replace your current unit, we’ll give you an honest answer based on your system’s age, condition, and your household’s needs.

Toilet Repair & Maintenance

If your toilet is running constantly, won’t flush properly, is leaking at the base, or keeps clogging, these aren’t problems you should ignore. A running toilet alone can waste hundreds of gallons of water per day, silently driving up your water bill. Kokesh Plumbing diagnoses and repairs all common toilet problems, including faulty flappers, worn fill valves, weak flush pressure, and cracked components, and of course full toilet replacements when repair no longer makes sense. Thinking about upgrading to a comfort-height, dual-flush, or high-efficiency toilet? We can help you choose a model that fits your bathroom, your habits, and your budget.

Kitchen Faucet Installation & Repair

A dripping kitchen faucet, a handle that’s hard to turn, or a sprayer that’s lost its pressure are all signs it’s time to call a plumber. Left unaddressed, even a slow drip can waste thousands of gallons of water annually. Kokesh Plumbing installs and repairs all kitchen faucet styles — from standard single-handle fixtures to high-arc pull-down and commercial-style models. If you’re remodeling your kitchen or simply want to swap out an outdated faucet for something that performs better and looks great, we make the process simple. We work with all major brands and can help you find a fixture that balances quality and value.

Sump Pump Repair & Installation

If your sump pump stops working during a heavy rainstorm, the results can be devastating. Homeowners often don’t think about their sump pump until it fails, and by then, water is already entering the basement. Kokesh Plumbing installs, repairs, and replaces sump pump systems, and can add smart environmental monitoring that sends you an alert if your pump fails or water levels rise unexpectedly. If your sump pump is running constantly, making unusual noises, or is more than seven to ten years old, it’s worth having it inspected before the next big storm tests it.

Garbage Disposal Installation

A garbage disposal that hums but won’t spin, leaks under the sink, or simply stops working is a common kitchen frustration. Kokesh Plumbing installs and replaces garbage disposals of all sizes and brands, ensuring proper drain alignment and leak-free connections from day one. If you’ve never had a disposal and want one added, we handle that as well, including all necessary drain modifications. Wondering which disposal is best for your household? We’ll point you toward a model that matches your usage without overselling you on horsepower you don’t need.

Shower Installation & Repair

A shower that drips when it’s off, delivers inconsistent water temperature, or has lost water pressure is telling you something is wrong. Kokesh Plumbing handles all shower repairs, including shower valve replacement, cartridge repair, and pressure balancing fixes. We also handle full shower installations from standard setups to custom builds featuring rain heads, body sprays, and handheld fixtures. If you’re renovating a bathroom and want a shower that genuinely feels like a luxury experience, our team has the expertise to make it happen correctly and without costly surprises.

Water Softener Installation

If you’re noticing white scale buildup on your faucets, spots on your dishes, dry or itchy skin after showering, or appliances that seem to wear out faster than they should, hard water is likely the culprit. Kokesh Plumbing installs whole-home water softening systems that treat water at the point it enters your house, protecting every pipe, fixture, and appliance downstream. Homeowners who invest in water softeners often report noticeable improvements in water quality almost immediately. We’ll assess your water hardness and recommend a system sized correctly for your household.

Gas Line Installation & Repair

Gas line work is not a DIY project; it requires a licensed plumber with the training and tools to do it safely and to code. Whether you’re adding a gas line for a new outdoor kitchen, a fire pit, a gas range, or a whole-home generator, Kokesh Plumbing handles the installation from start to finish. We also repair damaged or aging gas lines throughout the home. If you smell gas, notice a higher-than-usual gas bill, or have dead vegetation above where your gas line runs, call us immediately. Gas leaks are emergencies that require professional attention right away.

Whole House Leak Detection

Most home water leaks aren’t visible, but they’re happening inside walls, under slabs, or behind appliances, silently causing mold, structural damage, and skyrocketing water bills. Homeowners frequently search for answers to questions like “why is my water bill so high” or “how do I know if I have a hidden water leak”, and the answer often lies in a whole-home leak detection system. Kokesh Plumbing installs smart water monitoring systems that track your usage in real time and automatically shut off your water supply the moment a leak is detected. It’s one of the most effective ways to protect your home from the kind of water damage that insurance doesn’t always fully cover.

Bathroom Faucet Installation & Repair

A bathroom faucet that drips, runs slow, wobbles at the base, or has visible corrosion isn’t just an eyesore, it’s also wasting water and signaling that something needs attention. Kokesh Plumbing installs and repairs all bathroom faucet types, including single-hole, centerset, widespread, and wall-mounted configurations. If you’re updating a bathroom vanity or simply replacing a faucet that’s past its prime, we make the process easy. We work with fixtures across all price points and can help you find an option that looks great, performs reliably, and holds up over time.

Drain Cleaning

A slow drain is easy to ignore — until it stops draining altogether. Whether it’s a kitchen sink that’s backing up, a bathroom drain that’s sluggish, a shower that’s pooling water around your feet, or a main sewer line that’s affecting multiple fixtures at once, Kokesh Plumbing gets to the root of the problem and clears it completely. Homeowners often try store-bought chemical drain cleaners first, but these rarely solve the underlying issue and can actually damage older pipes over time. If you’re dealing with a drain that clogs repeatedly, gurgling sounds coming from your pipes, or unpleasant odors rising from your drains, those are signs of a blockage that needs professional attention. We use professional-grade equipment, including hydrojetting, to clear obstructions quickly and thoroughly, and can inspect your drain lines with a camera if we suspect a deeper issue like tree root intrusion, pipe scaling, or a collapsed line. Don’t wait until a slow drain becomes a sewage backup. Kokesh Plumbing resolves drain problems at the source, not just the surface!

What’s Going On With Saint Charles Lateral Lines?

If you live in a Saint Charles home built before 1970, your sewer lateral line — the pipe connecting your home to the public sewer main — is likely made of aging clay that may be cracking, shifting, or clogged with tree roots. Warning signs include slow drains, sewage odors, wet spots in the yard, or basement backups. The good news is that the Saint Charles Lateral Sewer Insurance Program can help cover up to 90% of repair costs (up to $7,500 per home) for the portion of pipe that starts at the exterior of your home and connects to the sewer main line, though anything under your private property is your responsibility. You’ll need to have a pumber cable your lateral line, then submit their findings through a “Residential Sewer Lateral Repair Application” to St. Charles County to qualify for assistance. You’ll then need to obtain three separate bids from plumbers of your choosing, and St. Charles County will pay up to 90% of the lowest bid. The sooner you act the better, as these pipes don’t improve with age. Contact us today to get your lateral line replacement process started!

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Need an Emergency Plumber in O'Fallon?

Whether it’s a burst pipe, sewer backup, or a water heater issue, our skilled and licensed plumbers are ready to provide fast, professional service to minimize damage and restore your home or business. We’re available 24/7, 365 days a year, even on holidays! Call 636-391-1233 for emergency service.

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Our Info

Kokesh Plumbing

408 Kehrs Mill Road
Ballwin, MO 63011

Office Hours:

M-F | 8:30AM – 4:30PM

Phone Number:

636-391-1233

RESIDENTIAL SERVICES

Frequently Asked Questions

Do you offer 24/7 emergency plumbing service in O’Fallon, MO?

Yes. Kokesh Plumbing is available around the clock for plumbing emergencies in O’Fallon and the surrounding St. Charles County area. Call 636-391-1233 any time, you’ll reach a licensed plumber, not an answering service.

What plumbing issues are most common in O’Fallon homes?

It really depends on the age of the home. Older O’Fallon properties near the original downtown area may have aging supply and drain systems that need attention, and newer construction in the city’s expanding subdivisions tends to present different questions. Sump pump performance, water heater sizing, pressure-reducing valve function, and builder-grade components aren’t always installed to the highest standard.

Is Kokesh Plumbing licensed and insured in Missouri?

Yes. All Kokesh plumbers are union-trained and fully licensed in Missouri, including for work in St. Charles County. We carry complete insurance on all residential and commercial jobs.

We just bought a newer home in O’Fallon. Is it worth having the plumbing looked at?

It’s a fair question, and the honest answer is yes. Builder-grade plumbing in newer construction often includes pressure regulators, water softener loops, and sump systems that benefit from a professional eye, particularly once you’re past the initial builder warranty. We’re happy to do a baseline inspection and tell you what you’ve got.

O’Fallon is a big city with a lot of commercial development. Do you handle commercial plumbing?

Yes. Kokesh serves businesses throughout O’Fallon and St. Charles County, wheter you have retail, office, medical, or industrial space. Service calls, backflow certification, water heater installation, grease interceptor service, and larger commercial plumbing projects are all part of what we do. Call 636-391-1233.

Have a Plumbing Problem? Let's Talk.

Fill out the form below or give us a call to request an estimate or schedule service. We serve the greater St. Louis area and respond promptly, usually within one business day for non-emergency requests.

Or call us directly: 636-391-1233 | 24/7 Emergency: 636-391-1233