In Commerce City, the South Adams County Water and Sanitation District runs the public sewer and draws a line between its system and the private sewer lines owned by property owners. When your private line breaks or clogs, a plumber makes the repair. Call the number on this page to be connected with a local plumber in Commerce City.
Commerce City's sewer setup
Commerce City grew from farmland into an industrial and suburban city after industry arrived in the late 1920s. The city lists the South Adams County Water and Sanitation District (SACWSD) as its water and sewer provider. SACWSD treats wastewater at its own Williams Monaco Wastewater Treatment Plant on Monaco Street in Henderson rather than sending it to Metro Water Recovery. Adams County also lists another district at a Commerce City address, so a few areas may be served differently; check your bill.
SACWSD asks customers with a sewer backup to call so it can help work out whether the blockage is in the public main or the private line. Its emergency number, answered during and after business hours, is 303-288-2646. The district also advises removing trees whose roots are near sewer service lines, a sensible precaution anywhere roots and older pipe meet.
Who handles what
| Situation | Usually handled by | First step |
|---|---|---|
| Sewage coming from a manhole or the street | SACWSD | Call 303-288-2646 |
| Backup inside one home, neighbors fine | Property owner's plumber | Stop water use and call a plumber |
| Unsure where the blockage is | Both, after inspection | Call SACWSD, then have the line cleared and scoped |
| Roots found in the private line | Property owner | Camera inspection and repair plan |
Warning signs
- Wastewater rising in a floor drain or shower
- Toilets that bubble when a sink empties
- Whole-house slow drains
- Repeat clogs after cleaning
- Sewer odor along the pipe route outside
These symptoms affect the whole house rather than one fixture. If you see them, limit water use, keep the area around an overflowing drain clear, and avoid chemical drain openers, which won't clear roots or a broken pipe and can be hazardous for whoever opens the line next.
Seasonal notes
Roots grow most actively in the warm months, so slow drains that build through summer are a common pattern. Winter brings frost and freeze-thaw movement that can stress a joint that is already cracked. If you plan a repair that involves digging, the plumber can tell you how frozen ground affects the schedule. For an active backup, don't wait: stop using water and call.
Repairs that alter plumbing go through the City's Building Safety Division (303-289-3790), with permits and inspections handled in the eTRAKiT portal.
Sewer Line Repair questions in Commerce City
Should I call the sewer utility or a plumber first?
Who is responsible for the sewer pipe between my house and the main?
Why do tree roots keep coming back in my sewer line?
Are wipes labeled flushable safe for my sewer line?
More plumbing services in Commerce City
Sewer Line Repair nearby
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