Niwot water comes from Left Hand Water District, which treats service lines beyond the meter pit as private, so most hidden leaks here are the homeowner's to fix. A plumber can test that line and the plumbing inside to find the source. Call the number on this page to be connected with a local plumber in Niwot.

What happens when you call
You will be connected with an independent plumber who serves Niwot. Expect questions about how long your Left Hand usage has been up, whether the meter moves with everything off and where you have seen moisture. If you suspect the yard line, say so; it is private beyond the meter pit, and the plumber will plan to trace it.
The visit usually starts at the meter, then valves are closed to test each part of the house. Acoustic gear, moisture meters or thermal imaging pinpoint the spot so digging or drywall work stays small.
Cost factors
- How long the private line runs from the meter pit to the house
- How many sections need testing before the leak shows
- Whether the source is in the yard, a slab, a wall or a fixture
- The repair itself and any Boulder County building permit
Local conditions in Niwot
Niwot is a small unincorporated community on State 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 supplies water, blending its own treated water with water bought from Boulder, Longmont and Central Weld County Water District. Niwot Sanitation District collects and treats wastewater at its own plant.
Left Hand locates its lines only up to the meter pit; beyond the pit, the service line is private and belongs to the customer. The district keeps a service line inventory and will tell you what your line is made of if you call 303-530-4200. Its office hours are weekdays, 8:30 a.m. to 4:30 p.m., and it does not publish a separate after-hours line. On the sewer side, Niwot Sanitation District makes the owner responsible for the whole sewer service line from the building to the main.
Because Niwot is unincorporated, building permits come from Boulder County Community Planning and Permitting, not a town office.
Short checklist
- Read the meter, then read it again an hour later without using water
- Turn off irrigation so it does not skew the test
- Find the main shutoff inside the house
- Note any wet spots between the meter pit and the foundation
Leak Detection questions in Niwot
Who pays to fix a leak between the water main and my house?
How do I find out which water provider serves my address?
Do I need a permit to repair the leak once it is found?
Does a jump in my water bill always mean a leak?
More plumbing services in Niwot
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