Backflow Testing in Colorado
Backflow Testing across Colorado: the 370 ZIP codes and 145 cities we route calls in, and who licenses plumbers in the state.
Free to homeowners in Colorado — the contractor pays us for the introduction, you never do.
Who has to test
Our backflow testing coverage in Colorado runs to 370 ZIP codes in 145 cities. Backflow assemblies are required where a premises can push water back into the main, and in a state of large municipalities that duty is usually written into one city-wide water ordinance that applies the same way across tens of thousands of connections.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route backflow testing calls in 370 ZIP codes across 145 Colorado cities, in 21 counties.
What this site is
CrossConnect is a referral service, not a contractor. We connect property owners and managers with independent contractors. Backflow assembly testing is normally restricted to testers holding a specific certification and using calibrated equipment, and the report usually has to reach your water purveyor — ask to see the certification and ask who files the report. We carry out no testing, we certify nobody, we do not set prices, and we never charge callers anything. Nothing here selects a device for any installation or states that any assembly is passing.Checking a credential in Colorado
Colorado licenses are issued by the Colorado State Plumbing Board, Division of Professions and Occupations, which publishes a public search you can use before work begins.
18 of the 21 Colorado counties we cover, from the top of the alphabet
- Adams County 15 ZIP codes
Westminster, Brighton, Commerce City, Bennett, Dupont, Henderson, Strasburg, Thornton, Watkins - Arapahoe County 24 ZIP codes
Aurora, Englewood - Boulder County 26 ZIP codes
Boulder, Longmont, Allenspark, Eldorado Springs, Erie, Jamestown, Lafayette, Louisville, Lyons, Nederland, Niwot, Pinecliffe, Ward - Broomfield County 4 ZIP codes
Broomfield - Clear Creek County 2 ZIP codes
Dumont, Idaho Springs - Denver County 67 ZIP codes
Denver - Douglas County 26 ZIP codes
Littleton, Castle Rock, Parker, Franktown, Larkspur, Lone Tree, Louviers, Sedalia - Eagle County 2 ZIP codes
Basalt, Vail - El Paso County 65 ZIP codes
Colorado Springs, USAF Academy, Calhan, Cascade, Elbert, Fountain, Green Mountain Falls, Manitou Springs, Monument, Palmer Lake, Peyton, Yoder - Elbert County 6 ZIP codes
Agate, Elizabeth, Kiowa, Matheson, Ramah, Simla - Fremont County 10 ZIP codes
Canon City, Florence, Coal Creek, Coaldale, Hillside, Howard, Penrose, Rockvale - Garfield County 3 ZIP codes
Glenwood Springs, Carbondale - Gilpin County 3 ZIP codes
Black Hawk, Central City, Rollinsville - Jefferson County 22 ZIP codes
Arvada, Golden, Evergreen, Wheat Ridge, Buffalo Creek, Conifer, Idledale, Indian Hills, Kittredge, Morrison, Pine - Larimer County 23 ZIP codes
Fort Collins, Loveland, Estes Park, Bellvue, Berthoud, Drake, Glen Haven, Laporte, Livermore, Red Feather Lakes, Timnath, Wellington - Park County 2 ZIP codes
Bailey, Shawnee - Pitkin County 4 ZIP codes
Aspen, Snowmass, Snowmass Village - Pueblo County 17 ZIP codes
Pueblo, Avondale, Beulah, Boone, Colorado City, Rye
3 more Colorado counties are inside the coverage area and are not listed here. If your ZIP code is in Colorado, the call reaches a contractor.
What that coverage looks like
The 21 counties in our Colorado footprint are served by many separate water suppliers, and each one decides which premises must test and how often. Jefferson County, with 109 covered ZIP codes, is the largest single block of them; Denver alone holds 67.
How a backflow testing job goes
A backflow test is a scheduled job that ends in a document. The assembly is isolated, the differential across it is measured, the result is written down, and the report goes to whoever requires it. A failed test means a repair or a rebuild and then a re-test; it does not mean the premises closes that day.
What the call asks about backflow testing
- What kind of premises it is and what is connected to the supply — irrigation, a boiler, a fire line, a commercial kitchen.
- Who is asking for the test: a water supplier, a health department, or a landlord.
- Whether there is an existing assembly with a serial number on it, and when it was last tested.
Every Colorado city we route in
37 cities, ordered by the share of buildings with twenty or more units. Containment assemblies are required building by building, and that is where the buildings are. Each page carries that city’s own numbers and the ZIP codes we route there.
- Lone Tree 34%
- Denver 26%
- Englewood 24%
- Breckenridge 24%
- Boulder 21%
- Broomfield 18%
- Aspen 18%
- Wheat Ridge 16%
- Silverthorne 15%
- Westminster 12%
- Aurora 12%
- Fort Collins 10%
- Colorado Springs 9%
- Golden 9%
- Louisville 9%
- Glenwood Springs 8%
- Greeley 8%
- Littleton 8%
- Arvada 8%
- Parker 8%
- Longmont 7%
- Loveland 7%
- Lafayette 6%
- Pueblo 6%
- Castle Rock 6%
- Johnstown 5%
- Canon City 5%
- Thornton 5%
- Fountain 4%
- Windsor 3%
- Evans 3%
- Brighton 3%
- Monument 2%
- Woodland Park 2%
- Carbondale 2%
- Evergreen 2%
- Commerce City 2%
Before you call
A test is a scheduled job with a report at the end of it, not a repair. What the report has to show, and who it goes to, are on the pages above.
