Niwot's water comes from Left Hand Water District, which treats service lines beyond the meter pit as private and the customer's responsibility. A leak between the pit and your house is a job for a plumber, permitted through Boulder County. Call the number on this page to be connected with a local plumber in Niwot.

What happens when you call
You'll be connected with an independent local plumber who works in Niwot; this site doesn't do plumbing itself. The plumber will want to know where the water is showing, whether pressure dropped throughout the house and how long it has been happening. Because Left Hand Water District locates only its own lines, expect the plumber to trace the private service line from the meter pit before any digging.
What sets the cost
- Locating the private line. The district marks lines only up to the meter pit.
- Run length. Larger lots around Niwot can mean longer service lines.
- Repair or replacement. One failed joint versus a new line.
- Surfaces and landscaping. Driveways, trees and gardens add restoration.
- County permit. Niwot is unincorporated, so Boulder County handles building permits.
Niwot conditions
Niwot is a small unincorporated community on Highway 119 about halfway between Boulder and Longmont, with a historic downtown along 2nd Avenue. Water and sewer come from two separate special districts: Left Hand Water District for water and Niwot Sanitation District for sewer. Left Hand has served parts of Boulder, Weld and Broomfield counties since 1960 and blends its own treated water with water bought from Boulder, Longmont and Central Weld County Water District.
Left Hand's rule is simple. It locates its lines only up to the meter pit, and service lines beyond the pit are private and belong to the customer. If water is coming up in the meter pit itself, call the district at 303-530-4200 during weekday business hours; it doesn't publish a separate after-hours line. The district also keeps a service line inventory, and you can ask about your line's material at the same number.
Building permits for unincorporated Boulder County, including Niwot, come from Boulder County's Building Safety and Inspection Services at the Courthouse Annex, 2045 13th Street in Boulder (303-441-3926). Its page doesn't list plumbing permits specifically, so confirm what your repair needs.
Before the plumber arrives
- Find and test the main shutoff in the house.
- Note where the meter pit is and keep it clear.
- Mark the wet area and when it appeared.
- Shut off irrigation so it doesn't mask the leak.
Water Line Repair questions in Niwot
Where does my responsibility for the water service line begin?
Will Colorado 811 mark my private water line?
What material is my service line likely made of?
Do I need a permit to repair or replace my water service line?
More plumbing services in Niwot
Water Line Repair nearby
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