Active leak you can't stop
Water running inside a wall, ceiling, or under a floor. Close the main and call.
Family-owned · Gaithersburg Local
Emergency Plumber in Gaithersburg, Same Day
Active leaks, sewage backups, and no-water calls come first. Tell us what's happening.
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We'll follow up within one business day. No pressure, no upsells.
What Counts as a Plumbing Emergency
If you need an emergency plumber in Gaithersburg right now, call [(301) 834-2944](tel:+13018342944) and describe what's happening; you'll get a read on the phone about whether it's a today problem or a tomorrow problem. Water that's actively running where it shouldn't be, sewage coming up through a floor drain, and a house with no water at all are the three that don't wait.
Not everything urgent-feeling is an emergency, and we'd rather tell you that than bill you for it. A dripping faucet at 11pm can wait until morning. A supply line spraying inside a wall cannot. The difference is whether water is getting somewhere it will do damage while you sleep.
Completed emergency plumbing in a Maryland home
Shut the Water Off First
Before you call anyone, find your main shutoff and close it. In most Montgomery County homes it's in the basement on the wall facing the street, often near the water meter; on a slab it may be in a utility closet or outside in a box at the property line. Closing it stops the damage clock, and everything after that is a repair rather than a race.
If the leak is at one fixture, the local shutoff under the sink or behind the toilet is enough. This is also the moment people discover their shutoff valve is seized, which is why we replace so many of them; a valve that won't close during a leak turns a small job into a flooded floor.
For a water heater that's leaking from the base, close the cold inlet on top of the tank. That's a replacement conversation rather than a repair, but stopping the inflow buys you the time to have it calmly.
The Calls We Treat as Same-Day
Sewage backing up
Waste coming up through a tub, shower, or floor drain means the main line is blocked, not a single fixture. That's a [main line clearing](/services/sewer-line-cleaning).
No water at all
On county water this is usually a main or valve problem. On a [well](/services/well-pump-repair) it's the pump, the switch, or the pressure tank.
Failed sump pump with rain coming
A dead pump before a storm is a same-day call, not a wait-and-see one. [Sump pump repair](/services/sump-pump-repair).
No hot water in winter
Not strictly an emergency, but it moves up the list when it's cold. Often one element or a thermocouple rather than a new heater.
Completed emergency plumbing in a Maryland home
Why You Get a Real Answer on the Phone
There's no dispatch center here. When you call (301) 834-2944, you're describing the problem to the person who will actually be looking at it, which is the reason a phone diagnosis is worth anything at all. A call center can only book you a slot; someone who does the work can tell you to go close a specific valve and stop the damage before anyone arrives.
That also means we'll talk you out of a visit when a visit isn't warranted. Homeowners have reached us mid-panic over a leak that turned out to be condensation off a cold tank in a humid basement. Ten minutes on the phone, no truck, no charge, no problem.
Free, no-pressure estimate
Call Now and Describe What You're Seeing
Close your main shutoff if water is running, then call [(301) 834-2944](tel:+13018342944). Say which fixtures are affected and whether it's spreading; that's usually enough to tell you how urgent it is.
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FAQ Common questions
Frequently Asked Questions
Answers below
Do you answer after hours? +
Call (301) 834-2944 and describe the situation. Active leaks, sewage backups, and no-water calls get priority, and you'll get a straight answer about timing rather than an open-ended promise.
Where is my main water shutoff? +
In most Montgomery County homes with a basement, it's on the wall facing the street, usually near the water meter. On a slab-built home, check a utility closet or an outside box near the property line. Turn it clockwise to close. Finding it before you need it is worth five minutes on a calm afternoon.
My tub is backing up when I flush the toilet. Is that an emergency? +
It's urgent. When flushing one fixture pushes water up through another, the blockage is in the main line rather than at either fixture, and the lowest drain in the house floods first. Stop using water and call, because continuing to run it makes the backup worse.
Will you charge me if it turns out to be nothing? +
If we can resolve it on the phone, there's nothing to charge for. That happens more often than people expect, especially with condensation mistaken for a leak and with sump pumps that turned out to be unplugged or on a tripped GFCI.