From the first phone call to the final cleanup, MGA Plumbing is the reliable plumber St. Mary residents trust. We offer same day plumber service, 24/7 emergency response and honest flat-rate pricing on every plumbing repair and installation in St. Mary, MO.
We've built our reputation in St. Mary on honesty: we diagnose the real problem, explain your options in plain language and give you a firm price before any work begins. No surprises, no pressure, no upsells.
Our St. Mary plumbers arrive in fully stocked trucks so most repairs are completed in a single visit. We handle clogged drains, hydro jetting, sewer camera inspections, water heater installation, tankless water heaters, slab leaks, repiping, toilet and faucet repair, garbage disposals, sump pumps, water softeners, backflow testing and gas lines.
Plumber open now in St. Mary? Yes. Our 24 hour plumbers respond to burst pipes, sewer backups, water leaks, gas leaks, frozen pipes and no-hot-water calls around the clock with no overtime charges.
Every service below has a dedicated St. Mary page with local details, pricing information and reviews.
24/7 emergency plumbing for burst pipes, floods, backups and no-water situations.
Round-the-clock plumbers available nights, weekends and holidays.
Fast burst and cracked pipe repair to stop flooding and water damage.
Find and fix hidden and visible water leaks before they ruin your home.
Safe thawing and repair of frozen and freeze-damaged pipes every Missouri winter.
Emergency gas leak detection and repair for homes and businesses.
Professional drain cleaning for kitchen, bathroom, laundry and floor drains.
Stubborn clog removal with cables, augers and hydro jetting — no harsh chemicals.
High-pressure water jetting that scours grease, roots and scale from pipes.
Diagnosis and repair of cracked, collapsed, root-invaded and offset sewer lines.
Full sewer line replacement using trenchless or open-trench methods.
No-dig pipe lining and pipe bursting that saves your lawn and driveway.
Video pipe inspection that shows exactly what's wrong before you pay for repairs.
Emergency sewer backup clearing and cleanup to protect your home and health.
Same-day repair for gas, electric and tankless water heaters of every brand.
Fast, clean water heater replacement with removal and haul-away of the old unit.
Professional installation of tank and tankless water heaters, sized for your home.
Endless hot water and lower bills with properly sized tankless systems.
Fast diagnosis when the hot water stops — elements, thermostats, gas valves and more.
Electronic and acoustic leak detection that finds hidden leaks without tearing up your home.
Repair of leaking copper, PEX, galvanized and PVC pipes anywhere in the home.
Main water line repair and replacement from the meter to your home.
Locate and repair leaks under concrete slabs with minimal demolition.
Whole house repipe with PEX or copper to end chronic leaks and bad water.
Repair of running, leaking, clogged and overflowing toilets.
Installation of new water-saving, comfort-height and ADA toilets.
Fix drips and leaks or install new kitchen, bath and outdoor faucets.
Repair jammed or leaking disposals, or install a new quiet, powerful unit.
Repair of leaking shower valves, low pressure, drips and clogged shower drains.
Keep your basement dry with sump pump repair, replacement and battery backups.
Whole-home water softeners and filtration for Missouri's hard water.
Annual backflow preventer testing, certification and repair.
Safe gas line installation for ranges, dryers, grills, fireplaces and generators.
Whole-home plumbing inspections for buyers, sellers and preventive maintenance.
Commercial plumbers for restaurants, offices, retail, multifamily and industrial sites.
Complete home plumbing repair, replacement and installation services.
Flat-rate quotes approved by you before work begins.
Nights, weekends and holidays — a real plumber, not an answering machine.
Shoe covers, drop cloths and a thorough clean-up every time.
Most repairs are completed in a single visit.
Most St. Mary calls are handled the same day you call.
If it isn't right, we make it right.
Here's why we're rated the top plumber in St. Mary by local homeowners and businesses.
“Had three other companies tell me I needed a new sewer line. MGA Plumbing ran a camera, found a root ball, jetted it out and saved me thousands.”
“Hydro jetting fixed a clog that three snakings couldn't. They showed me the camera footage before and after. Great experience.”
“Scheduled online, got a text when the plumber was on the way, and the price matched the quote. Easy and professional.”
Our plumbers cover all of St. Mary and surrounding communities in the St. Louis Metro area, including:
Yes. MGA Plumbing plumbers live and work in the St. Louis Metro area and serve St. Mary plus nearby St. Louis, O'Fallon and St. Charles.
Our St. Mary customers consistently rate us 5 stars for speed, honesty and quality. Read the reviews on this page and give us a call to experience it yourself.
For emergencies we dispatch the closest available St. Mary plumber immediately — often within the hour. Standard appointments are usually available the same day. Call (888) 480-9811.
We provide free estimates on installations and replacements, and a firm upfront price on repairs after diagnosis. There's never a surprise on the final bill.
Everything: emergency plumbing, drain cleaning, hydro jetting, sewer line repair and replacement, water heater repair and installation, tankless water heaters, leak detection, slab leaks, repiping, toilet and faucet repair, garbage disposals, sump pumps, water softeners, backflow testing, gas lines, plumbing inspections and commercial plumbing.
Noise from a water heater is usually sediment — and a sign the tank needs attention before it fails.
Low pressure in one faucet is easy. Low pressure everywhere can mean a leak, a failing regulator or corroded pipes.
Discolored water is usually rust — from the city main, your water heater, or your own pipes.
Same day plumber · Affordable plumber · 24/7 emergency service in St. Mary, MO
Call (888) 480-9811