Sewer & Water Line Repair in Unincorporated Larimer County
Sewer, septic line and water line repair outside town limits in Larimer County: septic rules, districts, wells and frost depth.
- Camera inspection first
- Written, itemized quotes
- Licensed and insured
Photo: Ken Gallager, public domain, via Wikimedia Commons
Outside town limits in Larimer County, the sewer line from a house typically runs to a private septic tank or a sanitation district or city main, and the water comes from a district, a city system or a private well. Fort Collins Sewer Line Repair handles sewer line repair, septic line repair and water line repair across rural Larimer County, starting with a camera inspection. Because the rules depend on who serves your address, we confirm the provider and permit office before work starts.
Call (970) 999-1365 for a camera inspection anywhere in unincorporated Larimer County.
Call nowWho provides sewer outside town limits?
A rural address typically uses one of these:
- A private septic system. Larimer County’s Code of the West says, “If sewer service is not available, you will need to use an approved septic system or other treatment process.” The county has septic records for 14,895 parcels.
- A sanitation district. The Boxelder Sanitation District serves portions of unincorporated Larimer and Weld counties, plus parts of Fort Collins, Windsor, Severance and Timnath.
- Fort Collins Utilities. The city provides wastewater service beyond city limits, including parts of LaPorte, and its customers “own and maintain sewer service pipe between the house and the sewer main (located in the street).” Report a backup to Utilities at 970-221-6700 first.
Your bill shows who serves you, and no sewer bill usually means septic. See septic vs. sewer in Larimer County.
Water from districts and private wells
- Little Thompson Water District maintains the public system and the service line to the meter pit; owners are responsible for “plumbing and service lines on the customer’s side of the meter.”
- West Fort Collins Water District (2711 N Overland Trail, Laporte) has the mapped centers of LaPorte and Bellvue inside its boundary; we confirm its service-line rules before quoting.
- Fort Collins Utilities supplies water to parts of LaPorte, where customers are responsible for the “water service line from the curb stop to the service address.”
- Private wells. Well permits are granted by the state engineer, the Code of the West notes.
A district boundary does not prove a main reaches every lot: Masonville is inside Little Thompson’s boundary, yet 55 built domestic or household wells are within a mile of it.
Larimer County homes, by the numbers
The Census Bureau does not publish housing figures for unincorporated land alone. Countywide, Larimer County has 164,690 housing units, and 20.3% of its homes were built in 2010 or later (ACS 2020-2024 5-year estimates). LaPorte, Bellvue and Masonville skew older:
| Area (Census geography) | Median year built | Built before 1980 |
|---|---|---|
| Larimer County | 1993 | 31.9% |
| LaPorte (CDP) | 1977 | 64% |
| Bellvue (ZIP code area 80512) | 1977 | 59% |
| Masonville (tract 24.03) | 1987 | 41% |
| Campion (tract 20.11) | 1993 | 19% |
Homes that age may still have clay, cast iron or Orangeburg fiber sewer pipe, or galvanized steel or polybutylene water lines.
Frost depth and shallow lines
Larimer County’s structural design sheet says, “Minimum frost depth is 30 inches below grade countywide.” That rule is written for foundations, but it is a fair guide to how deep frost reaches. The county’s septic rules call for at least 12 inches of cover over the house-to-tank pipe, so a septic line near that minimum, or a shallow water line, can freeze, especially under a plowed driveway. More on how deep lines are buried.
What we see on rural properties
- Septic building sewers with root-filled joints, sags, sections crushed under drives and offset joints at the tank inlet.
- Shallow lines that freeze, from septic lines near the 12-inch minimum to water lines laid too shallow.
- Roots from windbreak and shade trees, which commonly work into clay and older joints.
- Long runs. Some foothills lots can have long service lines and shallow bedrock, which change how a line is dug.
Permits and septic inspections at sale
LCDHE, the Larimer County Department of Health and Environment, handles septic permits: “State and county laws require you to get a permit from the Department before building or fixing a septic system.” For work on just the house-to-tank pipe, we check with LCDHE whether your repair needs one. Where a district or Fort Collins Utilities serves you, its rules apply, and we confirm them first. We pull the permits, request the 811 locates and schedule the inspections.
When a septic home sells, the system “must be inspected by a certified third-party inspector,” and the report goes to LCDHE before closing unless the transfer is exempt. An Agreement to Repair allows repairs “within 180 days after closing.”
Nearby places with their own pages
- LaPorte: 4 miles northwest of Fort Collins, partly on Fort Collins Utilities sewer and water, with septic still in use.
- Bellvue: west of LaPorte along the Poudre River, with no sanitation district.
- Masonville: inside Little Thompson Water District’s boundary, with many wells and septic systems.
- Campion: between Loveland and Berthoud, with about half the nearby addresses inside town limits.
The nearby towns each set their own service line rules: see Fort Collins, Loveland, Berthoud and Wellington.
Our services in unincorporated Larimer County
Read more about sewer line repair in Fort Collins on our main page.
Other areas we serve
Nearby places we also cover:
Unincorporated Larimer County FAQ
Who provides sewer service outside town limits in Larimer County?
It depends on the address. Many rural homes use septic, some are on sanitation districts such as Boxelder, and Fort Collins Utilities serves parts of LaPorte.
Do you repair septic lines in unincorporated Larimer County?
Yes. We repair and replace the pipe from the house to the septic tank after a camera inspection. Pumping, system design and soil treatment area work are separate septic services.
Who is responsible for my water line on Little Thompson Water District?
The district maintains the public system and the service line up to the meter pit; property owners are responsible for the plumbing and service lines on their side of the meter.
How deep are water and sewer lines buried in Larimer County?
It varies by property. The county’s minimum frost depth for foundations is 30 inches, and its septic rules call for at least 12 inches of cover over the house-to-tank pipe, so shallow lines can freeze.
Do I need a permit to repair a sewer line outside town limits?
For septic, we check with LCDHE, which issues septic permits, whether a repair to the house-to-tank pipe needs one. For district or Fort Collins Utilities sewer, we confirm that provider’s rules before work starts.
Does a rural home with septic need an inspection before it sells?
Yes, unless the transfer is exempt. A certified third-party inspector must inspect the system, and the report goes to LCDHE before closing.
Sewer or water line trouble?
Call for sewer line repair, septic line repair and water line work anywhere in unincorporated Larimer County.
Camera inspection first, written and itemized quotes, and trenchless options where they fit.
Sewer and water line repair for Fort Collins, Loveland and Larimer County. Camera inspection first, written and itemized quotes, licensed sewer technicians.
Call (970) 999-1365