Sewer & Water Line Repair in Johnstown, CO
Sewer and water line repair on both sides of the Larimer-Weld county line, for new builds and older homes.
- Camera inspection first
- Written, itemized quotes
- Serving Larimer County
Johnstown sits southeast along I-25 and spans the Larimer and Weld county line. Its older town center is now surrounded by large newer communities such as 2534 and Thompson River Ranch, so a Johnstown sewer call can mean anything from roots in an old clay line to a sag in a pipe laid a few years ago. We inspect, repair and replace sewer and water service lines throughout Johnstown.
Call (970) 999-1365 for a camera inspection in Johnstown.
Call nowJohnstown homes, by the numbers
About 22,433 people live in Johnstown (U.S. Census Bureau, Vintage 2025 estimate), roughly 29% more than in 2020. The median home was built in 2007, and 41% of homes were built in 2010 or later. About 10% date from before 1980 and 5% from before 1960 (ACS 2024 5-year estimates).
Older Johnstown and the newer communities
The original town center. Johnstown’s older homes are concentrated here. Lines in houses this age may be clay or cast iron, and roots, corrosion and cracked joints are the usual causes of backups. Lining can renew a root-damaged line that still holds its shape without trenching the yard.
2534, Thompson River Ranch and other newer neighborhoods. These lines are usually PVC. Their weak points are the trench and later work: backfill that settles and leaves a sag, joints that separate, and lines hit during landscaping or fence installs. Expansive soil adds movement; the Colorado Geological Survey says about 10% of new homes built on expansive soils suffer significant damage.
Johnstown’s sewer utility
The Town of Johnstown runs a Sanitary Sewer Utility Enterprise to manage, maintain and operate its wastewater system. The town’s municipal code includes a section (13-3) on a property owner’s maintenance obligation for utility service, which the code defines as water and sewer services. We have not confirmed that section’s exact wording, so before any repair we confirm with the town which part of the line is yours. Because Johnstown crosses the county line, check your utility bill too, so we know which provider serves your address.
For comparison, Fort Collins, Loveland, Windsor and Berthoud all make the owner responsible for the line from the house to the main.
Buying a home in Johnstown
A standard home inspection stops at the drains you can see. The sewer line under the yard only shows up on camera, so ask for a scope within your inspection window. Near the town center, the video tells you how much life the original clay or cast iron pipe has left. In 2534, Thompson River Ranch and other newer communities, it shows whether the trench has settled, and gives you evidence for a builder’s warranty claim if the home is still covered. About sewer scopes.
How a Johnstown job runs
The camera goes in first, from a cleanout or a pulled toilet, and its locator marks any damage and its depth on the ground. You get a written quote listing every option that will work, from a spot repair to lining or a full replacement. We request the 811 locates, handle the permits and inspection, and finish with a camera run of the repaired line.
Our services in Johnstown
More detail on causes, methods and prices is on our main sewer line repair page.
Sewer camera inspection and scope
Video of the whole line, locate marks and a written summary.
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Sewer line replacement
Full or partial replacement, trenchless or excavated, with permits handled.
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Trenchless sewer repair
Pipe lining and pipe bursting with little or no digging.
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Water line repair
Leak detection and service line replacement, curb stop to house.
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Hydro jetting
Clears roots, grease and scale from the full width of the pipe.
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Sewer backup help
What to do right now, and how to stop it happening again.
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Sewer line replacement cost
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Nearby towns we also cover:
Johnstown FAQ
Who is responsible for the sewer line in Johnstown?
The town’s code includes an owner maintenance obligation for utility service, and in the nearby systems we have checked, the owner maintains the line from the house to the main. Because we have not confirmed Johnstown’s exact wording, we check with the town before quoting.
My Johnstown home is in a new subdivision. What usually goes wrong with the sewer line?
Sags where the trench settled, separated joints, construction debris and damage from later digging. A camera inspection shows which, and many of these are fixed with one small excavation.
Can you inspect a sewer line before I buy in Johnstown?
Yes. We run a camera through the line, record the video and give you a written summary you can share with the seller.
Sewer or water line trouble?
Call for sewer and water line work in Johnstown.
Camera inspection first, written and itemized quotes, and trenchless options where they fit.