A burst pipe is a split or crack in a water line that lets pressurized water pour into a wall, floor, or basement. Burst pipe repair in Dedham, MA means stopping the flow, then cutting out the damaged section and replacing it.
Our 24/7 emergency dispatch is available at night and on weekends. While you wait, close the main shutoff valve, open the lowest faucet, and turn off the breaker for any wet room.
The first ten minutes after a pipe bursts.
- Close the main shutoff valve, usually where the line enters near the meter or the basement wall..
- Open the lowest faucet in the house and flush upstairs toilets once to drain the lines..
- Turn off the water heater so the element or burner does not run dry..
- Cut power to wet rooms at the breaker panel if you can reach it without stepping in water..
- Photograph the damage, then start moving belongings and soaking up water..
If the main valve will not turn or the break is outside the house before the meter, call the Dedham-Westwood Water District's 24/7 line at 781-326-1250. The District supplies water in Dedham and can address a problem on its side. Then call us for the part inside your walls.
Why pipes split in a Boston-area winter.
Water expands when it freezes, and the pressure builds between the ice plug and a closed faucet. The pipe usually splits at the weak spot, not where the ice sits. That is why a burst often shows up hours after a cold night, when the ice melts and flow resumes.
NOAA's 1991 to 2020 normals for Boston Logan Airport put the January normal low at 23.1 F, with February at 24.6 F and December at 29.2 F. That is a Boston-area figure, not a Dedham station reading, but it tells you an average night sits below freezing for months. Cold snaps run well below the normal, so exterior walls, garages, and crawlspaces deserve attention before they get there.
Burst or frozen pipe? A dispatcher is on the line day and night.
Call (617) 752-0573Frozen but not burst yet: thawing safely.
If a faucet runs a trickle or nothing and a pipe is frosty or bulging, thaw it slowly. Open the faucet so melting water has somewhere to go. Warm the pipe with a hair dryer or a heating pad, starting near the faucet and working back toward the frozen spot.
Never use a torch or open flame. It can ignite framing and crack the pipe. If you cannot find the frozen section, or you see water leaking as it thaws, shut the main and call. A plumber can thaw the line and check it for hairline cracks that only leak once it is under pressure again.
Buried lines and the 48 inch frost depth.
The Massachusetts residential building code, 780 CMR, lists a frost depth of 48 inches for design. For buried water lines, that means the pipe belongs below that depth so that ground frost does not reach it. A line installed shallower, or one that lost soil cover to grading or erosion, is the one to worry about.
This matters when you replace a service line or add an outdoor spigot line. Ask the plumber how deep the trench will be and whether the depth meets the local code. A frozen buried line often shows up as no water at all, so check with neighbors before assuming the problem is inside your house.
Cracked, split, or burst: what the damage tells you.
The pipe material and the type of break change the repair. Plumbers read the damage before choosing a fix.
| What you see | Likely cause | Typical repair. |
|---|---|---|
| Long split along the pipe | Freeze expansion | Cut out and replace the section. |
| Pinhole spray | Corrosion or wear | Replace a short length, check nearby pipe. |
| Cracked fitting | Stress or a freeze | New fitting or short section. |
| Joint pulled apart | Movement or water hammer | Rejoin, add support, check pressure. |
| Broken drain line | Settling or impact | Replace section, test the run. |
Copper pipe repair.
Copper is common in many homes and repairs well. A plumber cuts out the damaged piece, then joins new copper with soldered or pressed fittings. Press fittings need no flame, which helps near wood framing, but they must be rated for the pipe and the pressure.
Ask what type of joint will be used and whether the repair is a section or a patch. A clamp can stop a pinhole quickly, but it is a temporary fix, not a lasting repair. Also ask the plumber to check the pipe on both sides of the cut, because copper that failed in one place is often thin elsewhere.
Drain pipe and other pipe leak repairs.
A cracked drain line behaves differently from a pressurized supply break. It leaks only when water runs down it, so the sign is dampness under a sink or a stain below a bathroom after a shower. The repair is a cut-out and a new run of pipe with proper slope. Our leak detection page covers how to track the slow ones down.
Repair now or replace the run?.
A single freeze split in a pipe that is otherwise sound calls for a section repair. If the plumber finds pitting, green crust, or flaking rust along the run, replacing more pipe can prevent a second emergency. The Town's Master Plan says 74 percent of Dedham houses predate 1978, so older piping is common.
We cannot assume the material, so ask for an inspection. For a pattern of failures, review repiping before the next cold spell.
What a burst pipe repair costs.
- How easy the pipe is to reach: open basement ceiling versus a wall that needs opening..
- Pipe material and length of the damaged run..
- Whether a thaw, a drain-down, or water extraction is needed first..
- Drywall, insulation, and flooring work after the pipe is repaired..
- Whether the call comes after hours, on a weekend, or on a holiday..
Homeowner policies generally cover sudden and accidental damage, and a frozen pipe burst is often treated that way, but wear and tear is usually not covered. Ask your insurer before the work starts and keep photos. Want your real number? Call (617) 752-0573.
Winter habits that prevent a repeat.
- Let a faucet drip on very cold nights if a pipe runs along an outside wall..
- Open cabinet doors under sinks on exterior walls so room heat reaches the pipes..
- Disconnect hoses and close the interior shutoff to outdoor spigots..
- Keep the heat on if you travel, even at a lower setting..
- Know where your main shutoff is and make sure it turns..
Frequently asked questions.
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Yes. Our 24/7 emergency dispatch takes calls at any hour, including holidays. We do not promise an arrival time, since it depends on the plumber's location and call volume, but the dispatcher will walk you through shutting the water off while you wait.
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Look where the water line enters the house, often near the meter in the basement or utility area. Turn the valve clockwise until it stops. If it is stuck or leaks around the handle, call us and the District's 24/7 line at 781-326-1250 if the problem is on its side.
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Often yes. A frozen pipe can have a hairline crack that only leaks once thawed and pressurized. If you thaw it and see any drip, shut the main and call.
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Before, if you can. Homeowner policies generally cover sudden and accidental damage rather than wear and tear. Photograph everything and keep the old pipe section if the plumber removes it.
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The plumber repairs the pipe. Drywall, paint, and flooring are often done by a separate contractor, so ask what the quote includes and what is left for another trade.
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Tell your landlord right away and shut off the water if you safely can. Responsibility depends on your lease and the cause, so we document the break with photos for the landlord.
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The state residential code lists a 48 inch frost depth. Ask your plumber to confirm trench depth for any new line. Our water line repair page covers buried line work.
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Yes, including Norwood and Walpole. The plumbing services hub lists the rest.
Codes, standards and sources.
Plumbing work in Massachusetts is governed by 248 CMR 10.00, the Uniform State Plumbing Code, and plumbers are licensed by the Board of State Examiners of Plumbers and Gas Fitters. You can read the state's consumer fact sheet on plumbers and gas fitters before you hire anyone.
Local facts on this page come from the Dedham-Westwood Water District, the Town of Dedham, the other towns named and Mass.gov, and were checked in October 2026. Where a fact could not be confirmed, the page says to ask the utility or the town.