Emergency Plumber in St. Louis — 24/7, Same-Day Response
Burst pipe, sewage backup, gas leak, or flooding? We're the 24 hour plumber St. Louis homeowners call when they need a plumber open now.
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If you're dealing with a burst pipe, active sewage backup, or flooding — stop reading and call. This page exists for when you have a few minutes to think through the situation.
Is This a Plumbing Emergency? — Know Before You Call
Not sure if you need emergency service or a same-day appointment? Use this to decide.
| Situation | Emergency? | First Step |
|---|---|---|
| Pipe burst — water actively flowing | YES — Call now | Shut off main water immediately |
| Gas smell near plumbing or appliances | YES — Call now | Leave home, call gas company, then plumber |
| Sewage backing up into multiple fixtures | YES — Call now | Stop using all water immediately |
| Water heater leaking from base | YES — Call now | Shut off water supply to heater |
| Toilet overflowing and won't stop | YES — Call now | Shut off supply valve behind toilet |
| Single slow drain, dripping faucet | No — schedule service | Call for same-day or next-day appointment |
| Low water pressure — no active leak | No — schedule service | Call to schedule diagnostic |
| Water heater making noise — no leak | No — schedule service | Call to schedule inspection/flush |
What to Do Right Now — Before the Plumber Arrives
These steps reduce damage while you wait for a technician. Do them in order.
Burst Pipe or Active Water Leak
- Shut off the main water supply. Typically near the front foundation wall in the basement. Turn clockwise to close.
- Open a faucet on the lowest floor to drain pressure from the system.
- Turn off electricity in any area where water is actively flowing or pooling.
- Take photos of the damage before cleanup — for insurance documentation.
Sewage Backup
- Stop using all water immediately. Every flush and drain adds volume to a blocked sewer line.
- Don't try to plunge a backed-up floor drain or toilet during a sewage backup — this pushes the blockage further in.
- Keep people and pets away from the affected area — sewage contains pathogens.
Gas Smell Near Plumbing or Appliances
- Do not turn on or off any electrical switches or appliances — sparks can ignite gas.
- Leave the building immediately — open doors on your way out but don't stop to investigate.
- Call Spire Energy at 1-800-887-4173 from outside the building. They respond 24/7 and will shut off gas service at no charge.
- Call a licensed plumber after gas service is confirmed off — for gas line leak detection, repair, and pressure testing.
Emergency Plumbing Services — What's Covered
24/7 emergency plumbing service covers the situations that can't wait until morning:
Burst Pipe Repair
Water actively flooding from a burst supply line, cracked pipe in an exterior wall, or failed joint. In St. Louis winters, highest-risk locations are uninsulated pipes in exterior walls, basement rim joist areas, crawlspaces, and garage utility spaces.
Do immediately: Shut off the main water supply immediately. Then call.
Burst Pipe Repair →Frozen Pipe Response
Missouri temperatures can drop 30 degrees overnight during January and February cold snaps — fast enough to freeze water in uninsulated pipe sections before homeowners notice reduced flow. A frozen pipe that hasn't burst yet is time-sensitive: controlled professional thawing reduces the risk of rupture.
Do immediately: Keep a faucet downstream slightly open. Call immediately.
Frozen Pipe Service →Sewage Backup — Multiple Fixtures
When sewage backs up into a floor drain, bathtub, or multiple fixtures simultaneously, the blockage is in the main sewer line. In St. Louis's older neighborhoods, this is most commonly root intrusion in a clay sewer lateral. Heavy rain events can also overwhelm a partially blocked lateral. This is a health hazard.
Do immediately: Stop using all water. Keep area clear. Call immediately.
Sewer Backup Emergency →Flooding — Tank Failure or Pipe Failure
A water heater tank that fails catastrophically can release 40–80 gallons of water into a utility room or basement. A supply line failure behind a wall can run continuously until the main is shut off. Either situation requires fast response to minimize structural damage and mold conditions.
Do immediately: Shut off main water and electricity in the affected area. Call.
Flooding Emergency →Gas Line Emergency
Gas smell near a water heater, furnace, or other gas-connected appliance. A licensed plumber handles gas line leak detection, pressure testing, and repair after the gas utility has confirmed safe conditions.
Do immediately: Leave the building. Call Spire Energy (1-800-887-4173). Then call a plumber.
Gas Line Service →Water Heater Failure — Active Leak
A water heater tank leaking from the base or a failed pressure relief valve discharging continuously requires immediate attention to prevent water damage.
Do immediately: Shut off supply valve to heater. Call for same-day replacement.
Water Heater Emergency →Burst Pipes and Frozen Pipes in St. Louis Winters
St. Louis sits far enough south that many homeowners underestimate its freeze risk. Missouri's climate produces winter cold snaps — particularly in January and February — where overnight temperatures can drop from the low 30s to single digits within 24 hours. That rate of change is fast enough to freeze water inside uninsulated pipe sections before a homeowner notices reduced water pressure.
Highest-risk locations in a St. Louis home
In a typical St. Louis home — especially pre-1970 construction where energy efficiency was not a design priority — the highest-risk locations are: pipes running through exterior walls (particularly north and west-facing walls), pipes in unfinished basements near the rim joist where cold air infiltrates, crawlspace plumbing, and pipes in unheated garages or utility rooms.
Pipes usually burst during thawing, not freezing
The rupture typically happens when ice begins to melt, not when it forms. As ice thaws, the water pressure behind the ice plug releases suddenly — and that pressure spike is what bursts the pipe. If you have no water flow from a fixture during a cold snap, assume the pipe is frozen and call immediately — controlled thawing by a professional significantly reduces the risk of rupture.
Sewage Backup — What Causes It and What to Do
A sewage backup is among the most urgent plumbing emergencies a St. Louis homeowner can face. It's unpleasant, it's a health hazard, and every minute you continue using water adds volume to the problem.
The most common cause in St. Louis
In older St. Louis neighborhoods — Benton Park, Dutchtown, Tower Grove East, Carondelet, and much of North City — the sewer lateral running from the house to the city main is clay pipe, often 80–100 years old. Tree roots find the joints between clay sections and grow into the pipe over years, gradually narrowing flow until the system backs up.
Municipal sewer surcharging
St. Louis's combined sewer system can surcharge during heavy rain events, pushing flow backward into home laterals. MSD (Metropolitan St. Louis Sewer District) has information on surcharging events and may have records of your area's history.
What the plumber does
A camera inspection identifies where the blockage is and what's causing it. A cable machine clears the immediate obstruction. If root intrusion is confirmed, a discussion follows about lining or lateral replacement. St. Louis City's Sewer Lateral Repair Program may cover a qualifying portion of the repair cost.
After the Emergency — Preventing the Next One
Emergency plumbing calls are often predictable in hindsight. Here's what reduces the likelihood of a repeat:
For frozen pipe risk:
- Insulate pipes in highest-risk locations (exterior walls, rim joists, crawlspaces, unheated garages) before the first hard freeze.
- Know where the main water shutoff is — and make sure everyone in the household knows.
- Set thermostats no lower than 55°F if the home will be unoccupied during a cold stretch.
- Let faucets on exterior walls drip slowly during extended sub-freezing forecasts.
For sewage backup risk in older neighborhoods:
A sewer camera inspection on a clay lateral that's never been inspected is good preventive spending — particularly in pre-1960 St. Louis homes with large trees near the property.
For water heater failure:
If the unit is 10+ years old, schedule an evaluation before it fails on its own timeline. In St. Louis's hard water conditions, annual flushing extends tank life.
For hidden leaks:
Check the water meter quarterly. Turn off every fixture and watch the meter dial for 10 minutes. If it moves, call for a leak detection appointment.
What Do Emergency Plumbing Services Cost in St. Louis?
Emergency plumbing is more expensive than scheduled service — that's the honest answer. Here's what to expect in the St. Louis market.
| Service | Typical Range |
|---|---|
| Emergency service call / after-hours premium | $75–$150 |
| Burst pipe repair | $200–$600 |
| Sewage backup clearing | $250–$500 |
| Emergency water heater replacement | $1,400–$2,000 |
| Frozen pipe response and repair | $150–$400 |
Emergency costs vary significantly by situation. Call to describe what's happening — we'll give you a range before anyone comes out.
What St. Louis Homeowners Say About Our Emergency Response
"Pipe burst in the basement wall at 11pm on a Tuesday in January. Called, got a real person immediately. Plumber was at the house in under an hour, shut off the affected section, repaired it, and had water back on before 1am."
"Sewage came up through the basement floor drain during a rainstorm. They walked me through what to do immediately before anyone even came out. Plumber arrived, did a camera inspection, found root intrusion in the clay lateral about 40 feet out."
"Woke up to no water on a 7-degree morning — frozen pipe in an exterior wall. Called at 6am, tech was there by 7:30. Thawed the pipe carefully, it hadn't burst. Also identified two other spots that were at risk and got those insulated the same visit."
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314-237-0332Licensed & Insured · Emergency rate quoted upfront before dispatch