Burst Pipe: What to Do in the First 10 Minutes

A burst pipe is a plumbing emergency where every minute matters. If you act fast, you can limit water damage to a few hundred dollars in cleanup. If you wait, you’re looking at soaked drywall, ruined flooring, and possible mold growth within 24-48 hours.

Here’s exactly what to do, in order, the moment you notice a burst pipe.

1. Shut Off Your Main Water Valve (First 60 Seconds)

Your first move is always the same: stop the water at the source. Every home has a main shutoff valve, usually located in one of these spots:

• Basement or crawl space, near where the water line enters the house
• Utility closet or garage
• Near the water heater
• Outside, in a valve box near the street (common in Washington DC rowhomes and older properties)

Turn the valve clockwise until it stops. If it’s a lever-style valve, turn it a quarter turn so it sits perpendicular to the pipe. If the valve is stiff or won’t budge, don’t force it hard enough to snap it — a broken shutoff valve turns a bad problem into a much worse one. In that case, shut off the water at the street-side curb stop, if your home has one, or go straight to step 4 and call an emergency plumber.

Don’t know where your main shutoff is? Find it today, before you have an emergency. Write it on a card and tape it inside a cabinet near the valve. This single five-minute task is the difference between a $300 cleanup and a $10,000 one.

2. Turn Off the Electricity to the Affected Area (Minutes 1-3)

Water and electricity are a dangerous combination. If the burst pipe is anywhere near outlets, light fixtures, or electrical panels — or if water is pooling on the floor near an outlet — go to your breaker panel and shut off power to that area or the whole house. Never step into standing water to reach a light switch or outlet.

If your water heater or any electrical appliance is in the flooding path, this step isn’t optional.

3. Drain the Remaining Water in the Pipes (Minutes 3-5)

Even after you shut off the main valve, there’s still water sitting in your pipes that will keep draining out from the break. To relieve that pressure and get the leak under control faster:

• Open the lowest faucet in your house (often a basement or ground-floor sink) to let residual water drain out
• Flush toilets once to clear water from the tank lines
• Open a faucet on an upper floor too — this lets air into the system, which helps water drain out faster instead of dripping slowly for the next hour

4. Call an Emergency Plumber (Minutes 5-6)

While the water is draining, call a licensed emergency plumber. This isn’t a wait-until-Monday problem — a burst pipe left unaddressed can keep causing damage even after the main valve is shut, especially if you can’t fully isolate the broken section.

If you’re in the DC area, DrainGuys’ Washington DC plumbing team handles burst pipe emergencies around the clock, including the older cast iron and galvanized steel plumbing common in DC’s historic rowhomes — pipe materials that are especially prone to bursting during freeze-thaw cycles or from age-related corrosion. Tell the dispatcher:

• Where the pipe burst (which floor, which room)
• Whether you’ve already shut off the main valve
• Whether water is actively pooling or has stopped
• Whether the leak is near any electrical panels or outlets

This information helps the plumber prioritize your call and arrive prepared with the right parts.

5. Start Removing Standing Water (Minutes 6-8)

While you wait for help, start managing the water itself:

• Use towels, a mop, or a wet/dry shop vac to remove standing water from floors
• Move furniture, rugs, and electronics out of the affected area
• Place buckets under any active drips from ceilings or upper-floor leaks
• If water is coming through a ceiling light fixture, stay away from it and keep the breaker off

Speed matters here. Water that sits for more than a few hours dramatically increases the odds of warped flooring, drywall damage, and mold.

6. Document the Damage (Minutes 8-10)

Before you start deep cleanup, take photos and video of the damaged area, the source of the leak, and any affected belongings. This matters for two reasons:

1. Insurance claims — most homeowner’s policies cover sudden pipe bursts (though not always gradual leaks), and photo documentation speeds up your claim significantly
2. Plumber diagnosis — showing your plumber photos of how the water was flowing can help them pinpoint the break faster

What Causes Pipes to Burst?

Understanding the cause helps you prevent a repeat. The most common culprits are:

• Freezing temperatures — water expands as it freezes, and that pressure can crack even solid copper pipe. This is a frequent issue during DC’s winter cold snaps, especially in exterior walls, crawl spaces, and unheated basements.
• Old, corroded pipes — many homes in the DC metro area still have original galvanized steel or cast iron plumbing that weakens with age.
• High water pressure — pressure above 80 psi puts constant stress on pipe joints and fittings.
• Tree root intrusion — roots can crack underground supply and sewer lines over time.
• Clogs and buildup — pressure builds behind a blockage until something gives.

How to Prevent Future Burst Pipes

A few proactive steps go a long way:

• Insulate exposed pipes in basements, attics, and crawl spaces before winter
• Keep your thermostat above 55°F, even when you’re away, during cold months
• Install a water pressure regulator if your home’s pressure runs high
• Schedule an annual plumbing inspection to catch corrosion or weak spots early
• Know your main shutoff valve location and make sure it turns freely

When to Call a Professional vs. Handle It Yourself

Shutting off water and doing initial cleanup is something every homeowner can do. But repairing the actual break is not a DIY job in most cases — especially if the pipe is behind a wall, under a slab, or part of your main supply line. A licensed plumber has the tools to locate hidden breaks, match pipe materials correctly, and make sure the repair meets code, which matters for insurance and resale.

Get Help Fast

A burst pipe doesn’t wait for business hours, and neither should your plumber. DrainGuys provides emergency plumbing services throughout the DC metro area, including Washington DC, Arlington, McLean, Reston, Bowie, and Jessup. If you’re dealing with a burst pipe right now, shut off your main valve, then call us — we send a plumber to your door, day or night.