Turn off the main water valve first, then open a faucet on the lowest level so the lines drain there instead of through the break. A plumber then removes the damaged length of pipe and splices in new material. Call the number on this page to be connected with a local plumber in Denver.

The first few minutes
- Close the main valve. In many Denver homes it sits in the basement or crawl space near where the supply line comes through the foundation wall, or close to the water heater.
- Mind the electricity. If water is near outlets or fixtures, only touch the breaker panel if you can reach it on dry ground.
- Look after the water heater. If a hot line failed, turn an electric unit off at the breaker or set a gas unit to pilot.
- Drain the system. Open the lowest faucet in the house to pull leftover water away from the break.
- Document it. Photos of the pipe and the wet areas help if you file an insurance claim.
Why it happens on the Front Range
Hard freezes and quick swings in temperature are a regular part of Denver winters. When water freezes inside a pipe, ice grows and pressure builds in the trapped stretch behind it, so the split often shows up away from the frozen spot. Plenty of breaks stay hidden until the ice melts and water starts moving again. Lines in exterior walls, unheated garages, crawl spaces and outdoor hose bibs are the most exposed.
Cold is not the only cause. Failed washing machine hoses, brittle toilet supply lines, corroded fittings and pipe rubbed thin against framing all burst in July as easily as in January. In older houses, and about 55.5% of Denver homes were built before 1980, aging galvanized steel can give way as well.
Inside the house or out by the street?
Any pipe inside the home is the owner's to fix. Denver Water says the property owner also owns the service line from the main into the house. If water is bubbling up in the street, the sidewalk or around a meter pit, call Denver Water's emergency line at 303-628-6801 so they can check whether the problem is on their side.
The repair itself
A single break is cut out and replaced. After a freeze, the plumber should restore pressure slowly and walk the rest of the system, because a second crack is common. If the same pipe keeps freezing, insulation, heat tape or moving it into heated space is the lasting fix.
Factors in the cost
Reach matters most: a pipe exposed in an unfinished basement is a quicker job than one behind tile or a finished ceiling. Pipe type, how many breaks there are and whether it happens late at night also count. Water cleanup and drywall are typically separate trades.
Burst Pipe Repair questions from Denver homeowners
Where would my main shutoff be?
Why did the leak start only after it warmed up?
Water is coming up in my yard or the street. Who do I call?
How do I keep it from happening again?
Related plumbing services in Denver
Helpful guides
Burst Pipe Repair in nearby cities and towns
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Jefferson County
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Broomfield County
Boulder County
Weld County
Elbert County
Park County
Gilpin County
Clear Creek County
Sources
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