Denver · Denver County
Burst and Frozen Pipe Repair in Denver, CO
Denver's fast temperature drops in fall and spring split above-ground sprinkler backflow preventers that were not drained or covered, and deep winter cold freezes pipes in crawl spaces and exterior walls. If something has burst, shut off the water to that line or the whole house and call for repair.
- Independent local pros
- Free referral, no obligation
- You approve the price before work starts
What is different about burst and frozen pipe repair in Denver?
The backflow preventer is the brass assembly on a pipe loop outside, usually near the foundation, and it is the most frequently frozen plumbing part in the metro area. A warm October afternoon followed by a night in the teens is enough. It has its own shutoff, typically inside the basement or crawl space, so you can isolate it and keep water on in the house.
Inside, the vulnerable spots are pipes in crawl spaces, in walls facing north, and in garages. Older brick bungalows with additions often have a bathroom or kitchen line run through an under-insulated space. After a repair, ask about relocating the line or adding insulation, and put the sprinkler blowout on your calendar before the first hard freeze.
From the Denver plumbing guide
Frozen pipes and sprinkler backflow preventers
Sudden temperature drops in fall and spring split above-ground irrigation backflow preventers that have not been drained or covered, and deep cold freezes pipes in crawl spaces and exterior walls.
What to check and ask before work starts in Denver
- Ask the plumber to show you the sprinkler shutoff and drain inside the house
- Ask whether the backflow assembly can be repaired with a kit or needs replacing
- Ask whether a replaced backflow preventer needs testing under local rules
- Ask what would keep the frozen line from freezing again
Licensing and permits for burst and frozen pipe repair in Denver
Colorado licenses plumbers through the State Plumbing Board, and licenses can be verified with the Division of Professions and Occupations. In Denver, plumbing permits are issued by the city's Community Planning and Development department.
Keystream Plumbing is a referral service. We do not perform plumbing work or hold a contractor license. The independent plumber you are connected with is responsible for licensing, permits and the work itself.
What the job usually involves
The steps are the same in Denver as anywhere; the local conditions above change how each one is done.
- Shut off and assess
- Replace damaged pipe
- Pressure test
- Freeze-proof
Burst and Frozen Pipe Repair questions from Denver
My sprinkler backflow preventer is spraying water. What do I do?
Find the sprinkler shutoff valve, usually on the line just inside the basement or crawl space where it exits to the yard, and close it. That stops the water without shutting off the house. Then have the assembly repaired or replaced.
When does Denver usually get its first hard freeze?
Often in October, sometimes earlier. Winterize the sprinkler system before then, and insulate or cover the backflow assembly during cold snaps in spring after the system has been turned back on.
Sources
- Lead Reduction Program, Denver Water
- Lead service lines, US Environmental Protection Agency
Local information reviewed October 1, 2026. Rules and programs change; confirm details with the agency before you rely on them.
More plumbing help in Denver
Burst and Frozen Pipe Repair in other cities
Ownership rules, soil, water and pipe materials make this a different job from one city to the next.
Related guides: How to Shut Off the Water to Your House, How to Prevent Frozen Pipes in Winter, What to Do When a Pipe Bursts.
Need burst and frozen pipe repair in Denver?
Call (833) 520-4758. Same-day service is often available; call to check timing.