Express Plumbing has been serving St. Peters since 1999. We're based in Lake Saint Louis, which puts us about 18–20 minutes from most St. Peters addresses. That's close enough to respond fast when you need us. We know St. Peters well — from the older neighborhoods off Mexico Road to the newer developments around Mid Rivers Mall. Jim's fixed plumbing in everything from small residential homes to commercial properties across St. Peters. We've handled rough-ins for new construction, replaced outdated galvanized pipe in older homes, and fixed emergency leaks in the middle of the night. Last winter, we replaced six water heaters in St. Peters in one week after that cold snap knocked out systems all over the area. When you've been working in St. Peters this long, you know the common problems, you know the local code requirements, and you know how to get things done without running in circles.
From quick fixes to full installs, we do the work that keeps your water running.

Burst pipe? Overflowing toilet? Water spraying from under the sink? We're on our way. Most emergencies happen when you least expect them, and we've seen it all — from frozen pipes in January to sump pumps that quit during a storm. We carry parts on the truck so we can fix most problems same-visit instead of making you wait three days for a callback.

If your shower's running cold or you hear banging sounds from the basement, your water heater's telling you something. We install gas and electric units, and we'll walk you through what size makes sense for your house. Most installs take half a day, and we haul off the old one so you don't have to figure out where it goes.

Building an addition or finishing a basement? We handle the rough-in plumbing before the drywall goes up. That means running supply lines and installing vents so everything's ready when you're set to install fixtures. We work with your contractor's schedule and make sure inspections pass the first time.
A dripping faucet wastes more water than you think — and that sound drives you crazy at night. We fix leaks, replace cartridges, and install new faucets in kitchens and bathrooms. Most repairs take under an hour. If it's shot and needs replacing, we'll tell you straight instead of patching something that'll break again next month.
When heavy rain hits Lake Saint Louis, your sump pump better be working. We test pumps, replace failed units, and install battery backups so you're covered even if the power goes out. A working sump pump is the difference between a dry basement and a mess you'll be cleaning for weeks.

Adding a gas line for a new stove, dryer, or tankless water heater? We run gas pipe to code and test every connection. Gas work isn't something to DIY or trust to someone without a license. We're bonded and insured specifically for this, and we pull permits when they're needed.
Call and We'll Give You a Real Answer
When you call (314) 807-8460, you're talking directly to us. We ask what's happening and tell you honestly whether it needs immediate attention or if it can wait. Since we're 14 miles away in Lake St Louis, we can usually get to St. Peters same-day — often within an hour or two for emergencies. We'll tell you when to expect us, and we show up on time.
We Diagnose It and Quote It Upfront
We show up with a fully stocked truck and figure out what's wrong. Whether it's a leaking pipe, a broken water heater, or a drain that's backing up, we explain the problem in plain language and tell you what it'll cost to fix. If you're good with the price, we get started. If we find something unexpected once we're into the job, we stop and talk to you before doing more work.
We Fix It Right and Clean Up
Once we start working, we don't leave until it's done properly. We use quality parts, we follow code, and we test everything before we're finished. Most repairs take a couple hours. Bigger jobs like water heater replacements take half a day. When we're done, it's fixed right and we clean up the mess before we leave.
Ready to get started?


We're usually in St. Peters within an hour or two for emergency calls — sometimes faster if we're already working nearby. Our shop is in Lake St Louis, about 14 miles from most St. Peters addresses. If you've got a burst pipe or flooding basement, call (314) 807-8460 and we'll head your way immediately.
No. We don't charge travel fees to come to St. Peters. The price is the same whether you're in Lake St Louis, St. Peters, or anywhere else in our service area. We're not adding fees just because you're a few miles away.
Yes. Jim's a licensed master plumber in St Charles County, which includes St. Peters. We pull permits when required and our work passes inspection the first time. We've been doing plumbing in St. Peters since 1999 and know exactly what the inspectors look for.
Water heater failures and sump pump problems are the most common. A lot of St. Peters homes were built in the 80s and 90s, and those original water heaters are reaching the end of their lifespan. We also see a fair amount of galvanized pipe that needs replaced in older homes. Sump pumps fail pretty regularly, especially in areas that get water during heavy rain.
Yes. We handle commercial plumbing for office buildings, retail spaces, and small commercial properties all over St. Peters. Commercial work usually means bigger systems and stricter code requirements, and we're set up for it. If you've got a plumbing issue in your business or need rough-in work for a buildout, give us a call.
You can reach us at (314) 807-8460 or email us at [email protected] for more information — we’re always happy to help.