From a burst pipe at 2 a.m. to a dripping faucet you've been ignoring for months, ExpressFlow Plumbers St. Catharines handles residential and commercial plumbing of any size. We answer 24 hours a day, send a licensed plumber fast, and agree on the price before any work starts. Most jobs are fixed the same day you call.
Some plumbing problems can't wait until Monday. Our 24 hour plumbers in St. Catharines are on call for the four failures that cause the most damage when they're left overnight.
Toilets gurgling, the shower filling up when the washer drains, or water at the basement floor drain usually means the main line is blocked. We clear it with a cable machine or hydro-jetting, then run a camera to show you the cause.
Drain cleaning in St. Catharines →A pilot that won't stay lit, a tripped element or a tank leaking onto the floor. We repair gas and electric tanks and tankless units, and when a tank has failed we replace it as quickly as possible.
Water heater repair →Cold radiators in January, a boiler that keeps locking out, or water dripping from the relief valve. We check pressure, the circulator pump and ignition, and work to get the heat back on the same visit.
Boiler repair →The pit is full and the pump is silent, or it runs non-stop during a storm. We fix stuck floats and burnt-out motors, replace failed pumps on the spot, and can add a battery backup for power outages.
Sump pump repair →You want to be sure that your new plumbing system or fixtures are installed correctly, and at ExpressFlow Plumbers St. Catharines we make sure of it. Whether you want to upgrade your faucets, install a new water heater, replace a toilet or put in a well pump, our certified team does it all to code and safely. We use top-quality materials and professional tools so your installation lasts for years, and we work carefully to keep disruption to your home or business to a minimum. Call us to get your new fixture or appliance installed right the first time.
Dealing with leaky faucets, running toilets, burst pipes or clogged drains? At ExpressFlow Plumbers St. Catharines, we fix problems of any complexity, including low water pressure, sewer line problems and sump pump failures. Leak detection equipment, drain cameras and hydro-jetting let us pinpoint the root of the problem quickly instead of patching the symptom. Small repairs are scheduled at a time that suits you, and urgent ones are handled 24/7.
Most plumbing emergencies give warning signs first: a sump pump that hums but won't start, rust at the base of a water heater, a drain that has been slow for weeks. Our certified plumbing contractors service faucets, toilets, drains, water heaters and sump pumps, check your pipes for leaks, corrosion and blockages, and suggest preventive steps before freeze-up or the spring storms. Regular maintenance costs far less than a burst pipe or a flooded basement.
A few minutes of the right steps can save thousands in water damage. Call us first, then work through this list while your plumber is on the way.
In most St. Catharines homes it's in the basement on the front wall, where the water line comes through the floor next to the meter. Turn it clockwise until it stops. A lever valve closes with a quarter turn.
With the water off, the tank can overheat. On a gas tank, turn the control knob to "Pilot" or "Vacation". On an electric tank, switch off its breaker. Don't try to drain it yourself; the water is scalding.
If water is near outlets, the furnace or the electrical panel, don't walk into it. Only switch off breakers if you can reach the panel while standing on a dry floor.
Don't flush, shower or run the dishwasher or washer. Everything you use upstairs comes back up through the basement drain. Keep kids and pets away from the water.
With the main off, open the lowest cold tap in the house and one upstairs tap to empty the pipes. If a pipe is frozen, never thaw it with a torch or open flame.
Photograph the water, the source and any damaged items before you move them, then lift valuables off the floor. Your insurer will ask for these.
Smell gas? That's not a plumbing call. Leave the house without switching anything on or off, then call 911 and Enbridge Gas at 1-866-763-5427 from outside.
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Whether it's a burst pipe tonight or a repair you'd like booked for next week, ExpressFlow Plumbers St. Catharines is here any time. We give you an arrival time on the phone, diagnose the problem with modern tools, and fix it right the first time.
(289) 906-9704
Our licensed plumbers in St. Catharines install, repair, replace and service both tank and tankless water heaters. We check for leaks, sediment buildup and worn-out components. Whether it's a minor repair, routine maintenance or a full replacement, we make sure your water heater runs efficiently and safely.
Learn more →Toilet running nonstop, clogged or not flushing properly, or want a new one installed? ExpressFlow Plumbers St. Catharines fixes faulty flappers, fill valves, broken flush handles and more. We also remove your old toilet, install the new one and seal it properly.
Learn more →If your sump pump won't start, makes strange noises or can't keep up with the water, we can help. Our plumbers repair and replace pumps, help you choose the right model for your basement, and upgrade older pumps before they fail.
Learn more →Slow drains, bad odours or frequent backups? Our certified plumbers use sewer cameras to find the problem quickly and repair cracks and root intrusions. If a full replacement is needed, we do it carefully to protect your property.
Learn more →A water bill that keeps climbing, a damp spot on the ceiling or the sound of running water when everything is off. We locate hidden leaks behind walls and under floors with specialized equipment, so we open up only what we need to.
Learn more →Leaky, corroded or burst pipes are repaired or replaced with copper, PEX or PVC. Pipe inspection cameras and trenchless techniques help us keep disruption to your home to a minimum, for long-lasting results.
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Open 24/7, including holidays
Warranty on all workmanship
Price agreed before work starts
Over 1,000 jobs completed
Cost-effective, eco-friendly services
Local office in downtown St. Catharines
"Had an emergency leak under the kitchen sink and they showed up the same day. Fixed everything quickly and cleaned up after. Super professional service."
Daniel K.
St. Catharines, ON
2026-01-05
"They installed our new water heater and everything went smoothly. Explained how it works and made sure everything was safe before leaving."
Olivia M.
St. Catharines, ON
2026-01-12
"Our drain was completely clogged and nothing worked. The technician used proper tools and cleared it fast. Works like new now."
Michael R.
St. Catharines, ON
2026-01-18
"We had low water pressure for weeks. They found the issue in the system and fixed it properly. Big difference right away."
Jason P.
St. Catharines, ON
2026-01-26
"Booked them for sump pump maintenance before winter. Everything was checked and cleaned. Feels much safer now."
Emma L.
St. Catharines, ON
2026-02-03
"Very impressed with the service. Fixed our toilet issue quickly and gave helpful advice to avoid future problems."
Sophia D.
St. Catharines, ON
2026-02-10
Straight answers to the questions we hear most often on the phone.