Sedalia Water and Sanitation District supplies water to homes inside its boundaries but, despite its name, provides no sewer service, and plumbing permits come from Douglas County. Plumber Denver CO is a free referral service that connects callers with independent plumbers. Call the number on this page to be connected with a local plumber in Sedalia.

Plumbing services in Sedalia
A small community on U.S. 85
Sedalia is an unincorporated community and census-designated place in northern Douglas County, with 177 residents at the 2020 Census. It sits on U.S. Route 85 about 8 miles northwest of Castle Rock, and its center is roughly 21 miles from downtown Denver in a straight line. Its post office dates to 1872. The 80135 ZIP reaches far beyond the CDP into the surrounding countryside.
A water district that started with the railroad
The Sedalia Water and Sanitation District was formed in 1958 and took over a water system originally installed and owned by the railroad. It serves only properties inside its boundaries; the district office is at (303) 688-2506. Homes elsewhere in the 80135 ZIP are outside the district and may be on wells or another system, so check your water bill to see which applies.
No sewer from the district
Here is the detail that surprises people: despite "Sanitation" in its name, the district states that it does not provide sanitary sewer service, and no other sewer provider for Sedalia was verified. Before a drain job, find out from your records or Douglas County whether your home connects to a sewer system or is not on municipal sewer and uses a private onsite wastewater system. That answer decides whether a backup is a lateral problem or something a specialist in onsite systems should look at. Either way, a plumber can clear and repair the drain line inside and leaving the house.
Permits through Douglas County
Sedalia is unincorporated, so the Douglas County Building Division issues building permits, open weekdays from 8 a.m. to 5 p.m. The Colorado Division of Professions and Occupations lists Douglas County as running its own county-wide plumbing inspection program, so plumbing work is permitted and inspected locally rather than by the state. Check with the county before a water heater replacement or any change to supply or drain piping.
Gas and heating
No gas utility was confirmed for Sedalia. If you smell gas, leave the house first, then call 911 and your gas utility, or your propane supplier if the home uses propane, from outside.
Winter on the edge of the foothills
Sedalia gets the Front Range's hard freezes and fast swings between warm afternoons and frigid nights. Outdoor faucets, pipes along exterior walls and lines in unheated outbuildings are the first to split. Disconnecting hoses and draining exposed lines before a cold snap goes a long way.
Sedalia compared with Denver
In Denver, water and sewer come as a pair. In Sedalia, water comes from a small district and sewer arrangements have to be confirmed property by property. When you call the number on this page, describe the problem and what you know about your water and sewer setup. You'll be connected with an independent plumber who works in the area, and you agree on cost and timing directly.
Common questions in Sedalia
Does Sedalia Water and Sanitation District provide sewer?
Who issues plumbing permits in Sedalia?
Is every Sedalia home on district water?
How do I know if my Sedalia home is on sewer?
Nearby cities and towns
Sources
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