Leak detection
A stained ceiling, a meter that keeps moving with every tap closed, a wall that feels damp. Locating the source comes before any drywall is opened.
See the details ↗Water on the floor, a drain that will not clear, a water heater that quit overnight. Call the dispatch line and a plumber serving your area can take the job. Licensed and insured plumbers cover Boulder, Longmont, Louisville and the foothill towns around them.

Each card opens the page that covers that problem in detail, from what to check before the call to what the plumber should document.
A stained ceiling, a meter that keeps moving with every tap closed, a wall that feels damp. Locating the source comes before any drywall is opened.
See the details ↗Slow tubs, gurgling toilets and a kitchen line that backs up again a week after plunging.
See the details ↗Backups at the lowest drain in the house, with a camera look at the pipe before anyone digs.
See the details ↗No hot water, a pilot that will not stay lit, or a tank weeping at the base.
See the details ↗Pinhole leaks that keep returning in the same run of pipe, and the choice between patching and replacing it.
See the details ↗Water extraction and drying after a burst pipe or an overflow. The scope stops at removal and drying.
See the details ↗Some calls need a narrower specialist. Fuel gas work goes to the gas line repair page, a heater that is past saving to water heater replacement, and efficiency questions to the tankless water heater page. A wet slab floor points to leak under the slab, a dripping fixture to faucet and toilet repair, and a jammed sink to garbage disposal service. Offices, restaurants and apartment buildings have their own page for business plumbing calls, and mineral questions go to water softeners and filtration. Water supply pipes between the street and the house are covered under water line repair.
What you do before help arrives often decides how much of the house gets wet. These steps are safe for most homeowners and take no tools.


A running leak gets worse by the minute, and the dispatcher can talk you through the shutoff while a plumber serving your area is lined up.
☎ Call (303) 567-7524Each fact comes from a city, county or state source, and each one changes what you should ask a plumber.
The City of Boulder reports average hardness of 42 mg/L, equal to 2.4 grains per gallon, and its own monitoring scale rates anything under 60 mg/L as soft. If a city of Boulder heater or faucet is crusting over, ask the plumber to look at the heater age, its temperature setting and any softener before blaming the supply. Other towns on this list buy water from their own utilities, so check that utility's report for your address.
Sources: City of Boulder drinking water quality and City of Boulder/USGS hardness scaleBoulder states that the sanitary sewer service line belongs to the property owner up to and including the connection to the city-owned main. When the lowest drain backs up, a camera inspection shows which side of that connection holds the blockage, which settles who fixes it before any digging starts.
Source: City of Boulder sanitary sewer rehabilitation programA December 2025 memo from the Colorado Division of Professions and Occupations says water heater installation and replacement requires a licensed plumber, a permit and an inspection. Before you approve a replacement, ask who pulls the permit and when the inspection happens. Inside the City of Boulder, plumbing work that adds, removes or replaces fixtures also comes with a fixture count form.
Sources: Colorado DORA memorandum, Dec. 3, 2025 and City of Boulder residential repairs guideBoulder's own winter guidance explains that water expands as it freezes and can split a pipe. In Nederland, the town utilities department has warned residents about temperatures near -20°F and told them to locate the shutoff, insulate pipes and protect the meter. Before the first hard freeze, find your shutoff, wrap pipes in crawl spaces and exterior walls, and disconnect garden hoses.
Sources: City of Boulder winter guidance and Town of Nederland cold alertA first safe check for each, and the page that goes deeper.
| What you notice | Likely source | First safe check | Where to read more |
|---|---|---|---|
| Meter dial turns with every fixture closed | A leak on a supply line or inside a fixture | Shut every tap and appliance, then watch the dial for a minute | Leak detection |
| Several drains gurgle or the lowest one backs up | A partial blockage in the main drain | Note which drain fails first and whether it follows laundry or showers | Sewer line repair |
| Hot water runs out fast or turns lukewarm | A failed element, thermostat or gas control, or a tired tank | Read the heater label for its age and check the breaker or pilot as the manual describes | Water heater repair |
| Pinhole leaks keep showing up in different spots | Pipe wall wearing out along a whole run | Mark each leak location and date so a plumber can see the pattern | Repiping |
| No water at any tap, or a frozen pipe after a cold night | A closed main valve, a frozen run or a supply problem | Check that the main valve is open, then look for frost on exposed pipe and keep taps cracked | Pipe repair |
| Pressure drops at every tap and the yard is soft | A leak on the water line from the street | Check the meter with the house shut off and look for wet ground near it | Water line repair |
If water is moving, a drain is backing into the house or a heater is leaking, treat it as one. Call, describe what you see and the dispatcher will sort out the rest.
☎ Call (303) 567-7524The dispatcher asks for the street address, what the plumbing is doing and whether the water is shut off. That is enough to match the job to a licensed and insured plumber who covers your area.
Night, weekend and holiday calls reach the same dispatch line, and same-day service is offered when availability allows, and the dispatcher says so on the call, not in advance. If your address sits on the edge of the service area, the dispatcher confirms coverage before anyone is sent.

The network reaches Boulder and the cities and towns around it, from Golden and Arvada in the south to Longmont and Lyons in the north, and up the canyons to Nederland, Jamestown and Ward. Pick your town to see local details.
Building permits come from different offices depending on the address: the City of Boulder, one of the other city or town building divisions, or Boulder County for unincorporated land. The county also reviews plans and inspects work in Jamestown, so a permit for a Jamestown plumbing job runs through the county. Source: Boulder County building permits
Day or night, the line is open. Tell the dispatcher what is happening and a plumber serving your area can take it from there.
☎ Call (303) 567-7524