Plumbers in Niwot, CO

Between Boulder and Longmont on the Diagonal

Niwot is an unincorporated community and census-designated place in Boulder County, with 4,306 residents at the 2020 Census. It lies on State Highway 119, the Diagonal Highway, roughly halfway between Boulder and Longmont, and its center is about 26 miles from downtown Denver. The historic downtown runs along 2nd Avenue. Longmont is the nearest larger city.

Water from Left Hand Water District

Left Hand Water District has served parts of Boulder, Weld and Broomfield counties since 1960. Its supply draws on Lefthand Creek, Colorado-Big Thompson water from Carter Lake and the Williamson Ditch, and it also buys water from Central Weld County Water District and the cities of Boulder and Longmont. The district disinfects with chlorine. Early Niwot residents relied on wells and cisterns before the district's system arrived.

Left Hand locates its lines only as far as the meter pit; the service line beyond the pit 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.

Sewer from Niwot Sanitation District

Niwot Sanitation District is a Title 32 special district that collects and treats wastewater for the community at its own plant on N. 95th Street, covering about seven square miles. Its emergency line is 303-652-2525, option 1. The district's rules put the whole sewer service line on the property owner, from the building drain all the way to the main, and owners must repair leaks or breaks after notice. Only the district or its representative may connect to district lines, so a plumber replacing a lateral coordinates that tie-in with the district.

Backflow requirements

Left Hand's cross-connection program follows Colorado Regulation 11. Commercial and high-risk properties must install and maintain backflow assemblies and have them tested every year at the customer's expense, with testing scheduled through a contractor the district uses.

Permits and gas

Because Niwot is unincorporated, building permits come from Boulder County Community Planning and Permitting, Building Safety and Inspection Services, at the Courthouse Annex in Boulder (303-441-3926). If you ever smell gas, leave the house first, then call 911 and your gas utility from outside, using the emergency number printed on your gas bill.

Niwot compared with Denver

In Denver, one city agency handles sewer and one utility handles water. Here, two independent districts split the job, and the sanitation district's rule that owners maintain the full sewer line to the main is broader than many homeowners expect. When you call the number on this page, mention that you are in Niwot and what you are seeing. You will be connected with an independent plumber who works locally, and price and timing are agreed with that plumber.