Westminster treats its own Standley Lake water and runs the sewer system, and it requires backflow assemblies on commercial, industrial, irrigation and fire line services, tested every year. Owners maintain the sewer line all the way to the tap on the city main. Call the number on this page to be connected with a local plumber in Westminster.
Westminster at a glance
Standley Lake, filled by Clear Creek snowmelt, is the city's only source, and Westminster treats it at the Semper and Northwest plants with chloramine disinfection. Hardness runs about 112 to 149 ppm, around 7 to 9 grains per gallon, so heaters and kitchen equipment collect scale at a moderate pace. The city owns roughly 411 miles of sewer pipe, with treatment at its Big Dry Creek facility or at Metro Water Recovery.
What to do now if something goes wrong
- Shut off water to the affected fixture, or close the building's main valve if water is spreading.
- Stop using drains on the line that's backing up and keep staff and customers away from the area.
- If a city main break or a problem in the street is the cause, call Westminster Public Works and Utilities at 303-658-2500.
- If anyone smells gas, get everyone out, then call 911 and Xcel Energy at 1-800-895-2999 from outside.
- Take photos of the damage and note the time for the landlord or your insurer.
- Call the number on this page to reach a plumber for the private side of the system.
Symptoms and what they often mean
| Symptom | Likely cause |
|---|---|
| Several floor drains backing up at once | A blockage in the building's sewer line before the city tap |
| Wet ground between the curb and the building | A leak on the owner's line between the meter pit and the building |
| Backflow assembly dripping from its relief valve | A worn check or relief valve that may fail its test |
| Hot water fading during busy hours | An undersized heater or scale buildup in the tank |
| Restroom fixtures running nonstop | Worn flush valve parts or a stuck flapper |
What shapes the cost
A job's price turns on how many fixtures or floors are involved, whether a camera or leak locating is needed to find the fault and whether digging is required. Westminster splits ownership at two points: the city owns the water line from the main to the meter pit, and the customer owns it from the meter in. For sewer, the private line runs from the property to the city main and includes the tap itself, so a failed tap is an owner repair too. A city building permit is required for water heater installs, plumbing modifications, moved fixtures and underground water or sewer line repair, while a like-for-like fixture swap isn't. After-hours scheduling to stay open also counts. Backflow assemblies must be tested when installed and yearly, with results sent to the city's Cross-connection Control team.
Commercial Plumbing questions in Westminster
Do fire sprinkler and irrigation services need their own backflow protection?
Who is responsible for the sewer line from our building to the main?
Which office issues plumbing permits for a commercial property?
Who do we call if a water main or meter problem shuts down the building?
More plumbing services in Westminster
Commercial Plumbing nearby
Helpful guides
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