The first ten minutes
Most plumbing damage happens in the time between noticing the problem and stopping the water. Do these in order, then call.
- Stop the water at the main shutoff. In most Pennsylvania houses with a basement, the main valve sits on the front foundation wall where the service line comes in, usually next to the water meter. A wheel handle turns clockwise to close; a lever handle turns a quarter turn so it sits across the pipe. If the problem is a single fixture, the small valves under the sink or behind the toilet will do.
- Kill power to anything wet. If water is near outlets, a furnace, or the electrical panel, switch the breaker off from a dry spot. If you would have to stand in water to reach the panel, don’t; wait for help.
- Stop using drains if sewage is involved. Every flush, shower or load of laundry sends more water toward the blockage, and it comes back up at the lowest drain in the house.
- Open a faucet on the lowest floor after shutting the main. It drains pressure out of the lines and reduces how much leaks from a split pipe.
- Move what you can and take photos. Pictures of the source, the water line on the walls and damaged belongings make an insurance claim much easier later.
If you smell gas
Leave the house first. Don’t flip light switches, start a car in an attached garage, or use a phone inside. Once you are outside and away from the building, call your gas utility’s emergency line or 911.
Is it actually an emergency?
Not every plumbing problem needs someone tonight. Calling at a sensible hour can save money and get you the plumber you want rather than whoever is free. This is a reasonable way to sort it:
| What you see | How urgent | Why |
|---|---|---|
| Water you can’t stop, even with the main shut | Right now | Ongoing damage to structure and wiring |
| Sewage coming up a floor drain or tub | Right now | Health risk; it gets worse with every use of water |
| Water heater leaking from the tank itself | Today | Tanks rarely stop leaking once they start |
| No water anywhere in the house | Today | Check with your water authority first; it may be a main break |
| Frozen pipe, no leak yet | Today | Thawing it before it splits avoids the real damage |
| One slow drain, one running toilet | Can wait | Inconvenient, not damaging |
If you can stop the water and nothing is getting worse, you have time to call during normal hours and ask questions.
Common plumbing emergencies in Pennsylvania homes
Burst and frozen pipes
Pipes on exterior walls, in crawlspaces and in unheated garages are the usual failures during a cold snap. A frozen pipe often doesn’t leak until it thaws, which is why water sometimes appears a day after the coldest night. If you find a frozen section that hasn’t split, open the faucet it feeds and warm the pipe gently with a hair dryer or heating pad, never an open flame. Our guide to burst and frozen pipe repair covers what a plumber does once the pipe has split.
Sewer backups
Water rising through a basement floor drain means the main line is blocked or broken somewhere downstream. In older neighbourhoods with clay or cast-iron laterals, roots and offset joints are the most common reasons, and heavy rain often makes it worse. Stop using water, keep people and pets out of the area, and read about sewer line repair to understand what the camera inspection will show.
Water heater leaks
A slow drip from the relief valve pipe can be a pressure or temperature problem. Water collecting under the tank from the tank body usually means the tank has corroded through. Shut the cold-water valve on top of the heater, turn off the power or set the gas control to “pilot,” and see our page on water heater repair for what comes next.
A failed sump pump during a storm
If the pit is filling and the pump isn’t running, check that it is plugged in and that the breaker hasn’t tripped, then look for a float that is stuck against the side of the pit. A pump that runs constantly may have a broken check valve or a discharge line that is frozen or blocked outside. Sump pump repair explains the usual fixes.
No water at all
Before calling a plumber, check whether neighbours have water and look at your water authority’s outage page. A break in the street is the authority’s job. If only your house is dry, the problem may be a frozen or broken service line between the curb and the house; water line replacement covers that situation.
What to tell the plumber when you call
A clear description gets you a better answer about timing and cost. Have this ready:
- Your town and nearest cross street, so the call reaches someone who works there.
- What you see and where: “water at the basement floor drain, smells like sewage,” not just “a leak.”
- What you have already done: main shut off, breaker off, drains not in use.
- The age of the house if you know it, and any work done on the line before.
- Whether anyone in the house has a health condition that makes the situation more urgent.
Ask in return how soon they can come, what the diagnostic or trip charge is, and whether after-hours rates apply. A reputable plumber will tell you before they arrive.
What happens when the plumber arrives
Expect the visit to start with finding the source rather than fixing it. For a burst pipe that may mean opening a section of drywall. For a backup it usually means clearing the line first with a cable or water jetter so the house is usable again, then running a camera to find out why it blocked. For water heaters it means confirming whether the leak is a fitting or the tank.
You should hear what caused the problem, what the immediate repair is, and whether there is a bigger issue that can be scheduled later. Emergency work is about making the house safe and usable tonight. Replacing a whole sewer line or water heater rarely has to be decided at 2 a.m.
What drives the cost of emergency work
There is no honest single price for an emergency visit, but the same factors move the number every time:
- Time of day and day of week. Nights, weekends and holidays often carry a higher rate.
- Access. Finished basements, pipes inside walls and lines under concrete take longer to reach.
- Diagnosis. A camera inspection or leak detection adds a line item but can prevent paying for the wrong repair.
- Parts on the truck. Common fittings are quick; an unusual water heater or old pipe size may mean a second visit.
- Permits. Some repairs, such as replacing a water heater or a section of sewer line, may need a municipal permit and inspection.
Cleanup is usually separate. Plumbers fix the pipe; drying out walls, floors and carpet is a water damage restoration job.
After the emergency
Dry things quickly. The EPA advises drying water-damaged materials within 24 to 48 hours to prevent mold growth, which is why fans and dehumidifiers matter even after the leak is fixed. Keep receipts and photos for your insurer, and ask the plumber for a written description of the cause.
If the repair involves digging in the yard, Pennsylvania law requires contacting PA One Call (811) at least three business days before excavation so buried utilities can be marked. When you hire a contractor, the contractor makes that call.
Who to call instead of a plumber
- Gas smell: your gas utility or 911, from outside.
- Water main break in the street: your water authority.
- Sewage in the street or a manhole overflowing: your municipal sewer authority.
- Flooding from outside, not from pipes: a water damage restoration company once the source is controlled.
Emergency plumbing questions
Should I call a plumber at night or wait until morning?
Call now if water can’t be stopped, sewage is coming up, or there is no heat and a pipe is at risk of freezing. If you have shut off the water and nothing is getting worse, waiting for regular hours is usually fine and often cheaper.
Where is my main water shutoff?
In most Pennsylvania homes with a basement, it is on the front foundation wall where the water line enters, close to the meter. In slab homes it may be in a utility closet, a garage, or an outdoor box near the curb.
Is a sewer backup covered by homeowners insurance?
Many standard policies exclude sewer and drain backup unless you added a specific endorsement. Check your policy and call your insurer early; photos taken before cleanup help.
Can I use drain cleaner on a backup?
Not on a main-line backup. Chemical cleaners won’t clear roots or a broken pipe, and they make the water dangerous for whoever has to open the line.
How do I know if a plumber is properly registered?
Pennsylvania has no statewide plumber license, but home improvement contractors must register with the Attorney General under HICPA, and some cities license plumbers locally. Our page on how calls work explains what to ask before work starts.
Looking for something specific? See drain cleaning, leak detection, or the areas we cover.