Castle Pines North Metropolitan District provides water and sewer for most of the city and requires yearly backflow tests for commercial, HOA, irrigation and fire services, arranging the testing itself through a contractor. The Village at Castle Pines is served by a separate district with its own rules. Call the number on this page to be connected with a local plumber in Castle Pines.

Signs a Castle Pines property should call a plumber
- A district notice about backflow testing or a failed device
- An irrigation assembly leaking at spring startup
- Restroom fixtures in a clubhouse or office that keep running
- Drains that slow down or back up together
- A water heater that's leaking or short on hot water
- Changes in water taste or feel between seasons
Two districts and one city permit office
Castle Pines North Metropolitan District, CPNMD, provides drinking water and wastewater service across the community. From October through April, it buys wholesale water from Highlands Ranch Water, so the water can change with the seasons. Castle Pines North is also a Rueter-Hess Reservoir partner community. District questions go to 303-688-8550.
CPNMD's cross-connection program is required by the state. Backflow assemblies at non-single-family properties, including commercial, HOA, irrigation and fire services, must be tested every year by a certified technician, and the district arranges that testing through its contractor for a monthly fee on eligible accounts. Skipping required testing can lead to an interruption in service.
The Village at Castle Pines, which borders the city to the south, is a different system: Castle Pines Village Metropolitan District, supplied by eight groundwater wells. There, every home and business has a backflow device, and devices on fire sprinklers or permanently plumbed pools and hot tubs must be tested yearly by a certified tester registered with BSI Online, hired by the owner.
Permits come from the City of Castle Pines Building Division at 7437 Village Square Drive, 303-705-0227. Water heater replacement and water or sewer line repair are 1-Stop permits managed in CommunityCore, and city staff do the inspections. Gas is Black Hills Energy.
Cost factors
- How many fixtures, buildings or irrigation zones are involved
- Repairs to backflow devices that fail testing
- Locating leaks on service lines or in slab floors
- Off-hours work at offices, clubhouses or retail spaces
- Permits and inspections for heaters and line work
What happens next
Your call reaches an independent local plumber who takes commercial and community-association work in Castle Pines. Mention whether the property is on CPNMD or the Village district, describe the problem and say when the space can be shut down. For a gas smell, leave first, then call 911 and Black Hills Energy using the number on the gas bill.
Commercial Plumbing questions in Castle Pines
Does a business here need its backflow assemblies tested every year?
How do we find out which water or sewer district serves our building?
Which office issues plumbing permits for a commercial property?
Does the local water hardness matter for commercial water heaters and equipment?
More plumbing services in Castle Pines
Commercial Plumbing nearby
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