Looking for a plumber in Longmont? Old Town houses from the early 1900s and subdivisions from the 1980s onward make frozen pipes, water heater replacements and aging sewer lines the common calls. Call Same Day Plumber any time to reach a licensed Colorado plumber.
Need a Plumber in Longmont Today?
Say roughly when the house was built and whether sprinklers have been blown out. Same Day Plumber is a referral line, so an independent Longmont plumbing company takes the call, quotes the job and bills you directly. They confirm the arrival time first.
Emergency Plumbing Services in Longmont
When something goes wrong fast in a Longmont home, it's usually one of these. Here's what to do first.
- Pipe burst after a cold front: close the main shutoff and open a faucet. See burst pipe.
- Water heater leaking: turn off the gas or power and the cold inlet. See water heater leaking.
- Sewage at the floor drain: stop using water. See sewer backup.
For any of these, an emergency plumber can often come out to Longmont the same day, including nights and weekends. If you smell gas, leave the building first and call the gas utility or 911 from outside.
24/7 Plumbing Services in Longmont
- Emergency PlumbingBurst pipes, flooding, sewage backups and loss of water, any hour.
- Drain CleaningClogged sinks, tubs, toilets and main sewer lines.
- Water Heater Repair & ReplacementNo hot water, leaking tanks, tank and tankless repair or replacement.
- Leak Detection & RepairHidden, slab and pipe leaks found and fixed before they cause damage.
- Sewer Line RepairCamera inspection, sewer repair and trenchless replacement.
- Pipe Repair & RepipingBurst, frozen and corroded pipes repaired or replaced.
- Toilet RepairRunning, clogged, leaking and broken toilets repaired or replaced.
- Faucet & Fixture RepairFaucets, garbage disposals and shower valves.
- Sump Pump RepairSump pump repair, replacement and battery backups.
- Gas Line RepairGas leak repair and appliance hookups by licensed plumbers.
- Water Softeners & FiltrationWater softeners, whole-house filtration and well pumps.
- Commercial Plumbing & BackflowCommercial plumbing service and backflow testing.
Common Plumbing Problems in Longmont Homes
Longmont's drinking water is all surface water. In 2025 about 38 percent came from the St. Vrain Creek watershed, stored in Ralph Price Reservoir, and 62 percent from the Colorado-Big Thompson project by way of Carter Lake.
The city's 2025 report lists hardness of 19 to 25 ppm, which is very soft. The median Longmont home was built in 1991.
Very Soft Water
At about 22 ppm, Longmont's water is among the softest on the Front Range, so scale is rarely the cause of a plumbing problem here and a softener is not needed. Soft water can be slightly hard on old copper and brass; blue-green stains at a drain are worth a plumber's look.
Old Town Longmont Houses
The historic east and west sides have houses from the 1890s through the 1920s. Clay sewer lines under big street trees are the usual trouble, along with galvanized supply pipe. A sewer camera inspection shows the line's condition before a sale. Blow out sprinklers by mid-October and disconnect hoses.
Frozen Pipes
Cold fronts split hose bibs, sprinkler lines and pipes in outside walls.
What Affects Plumbing Costs in Longmont
No plumber can quote a firm price before seeing the problem. These are the things that move the cost of plumbing work in Longmont.
- Freeze damage. Several fittings can crack in one cold snap.
- Sewer line condition. Roots clear quickly; broken clay pipe needs repair.
- Finding the problem. Leak locating and camera inspections are separate steps, but they keep the repair itself small.
- Time of day. Many companies charge an after-hours, weekend or holiday fee.
- Ask for the arrival fee before the plumber heads out, and for the repair price in writing before work starts.
How to Find a Licensed Plumber in Longmont
These checks take a few minutes and prevent most bad experiences, whichever Longmont plumber you end up hiring.
Check the Colorado License
Plumbers in Colorado are licensed by the state. Before any work starts at your Longmont home, ask for the license number and look it up with the Colorado State Plumbing Board.
Confirm Who Pulls the Permit
For work that needs a permit, the plumber should pull it.
What to Ask on the Phone
- What is the arrival window?
- Is there a service, trip or after-hours fee?
- For an emergency, will you stop the damage first and quote the permanent repair before starting it?
- What is your license number?
Plumbers in Cities Near Longmont
FAQs About Plumbers in Longmont
Is Longmont water hard?
No. The city's 2025 report lists total hardness of 19 to 25 ppm, which is very soft.
How quickly can I get a plumber in Longmont?
Often the same day, including nights and weekends, but it depends on demand and where in Longmont you are. The plumber gives you an arrival window when you call. During a citywide event such as a hard freeze or major storm, waits are longer, so shut off the water and limit the damage while you wait.
Find a Same-Day Plumber in Longmont, CO
If you have frozen pipes, water heater replacement or another plumbing problem in Longmont, call now. You'll be connected to a licensed plumber who works in your area, and you'll know the arrival window and any fee before they head out.