Hard water belt
Thornton, Castle Rock, Aurora, Westminster
These utilities publish hardness in the hard to very hard range. A softener has measurable work to do, and we'll show you the sizing arithmetic before quoting.
Water softeners
Service areas
Where we test and install on the Front Range
18 towns from Castle Rock to Fort Collins. Your city matters more than your budget here — hardness and disinfectant change enormously across this corridor.
By the numbers
What each utility publishes about its own water
Every figure here is quoted from the utility that publishes it, with a link to the source. Where a utility publishes no number, we say so rather than filling the gap from somewhere else.
| City | Utility | Hardness | Disinfectant | Source |
|---|---|---|---|---|
| Thornton | City of Thornton | Very hard11.7 average; 8.2 in winter, up to 14.6 in summer | Chloramine | Utility page |
| Castle Rock | Castle Rock Water | Hard6.6 to 10.8 | Chloramine | Utility page |
| Aurora | Aurora Water | Hardabout 8 (136 ppm average) | Chloramine | Utility page |
| Westminster | City of Westminster | Hard7 to 8 (2021 data) | Chloramine | Utility page |
| Denver | Denver Water | Moderatenot published as a number | Chloramine | Utility page |
| Arvada | City of Arvada | Moderateabout 5 (84 mg/L average) | Free chlorine | Utility page |
| Boulder | City of Boulder | Soft2.4 average | Free chlorine | Utility page |
| Longmont | City of Longmont | Soft1 to 2 | Not published | Utility page |
| Fort Collins | Fort Collins Utilities | Softnot published as a number; the city calls it naturally soft | Free chlorine | Utility page |
| Greeley | City of Greeley | Not publishednot published | Free chlorine | Utility page |
Verified 17 September 2026. The full write-up, with each utility's own wording.
Everywhere we work
All service areas
We install across the Denver metro and north along the Front Range. If your town isn't on this list, ask anyway — we'll tell you honestly whether we can get to you.
Denver, COAurora, COThornton, COWestminster, COArvada, COBroomfield, COLakewood, COLittleton, COHighlands Ranch, COCentennial, COParker, COCastle Rock, COBrighton, COLongmont, COBoulder, COLoveland, COFort Collins, COGreeley, CO
We don't yet have a published utility profile for Broomfield, Lakewood, Littleton, Highlands Ranch, Centennial, Parker, Brighton, Loveland. We'll measure at your tap and cite your own district's report when we do.
Chloramine metro
Denver, Aurora, Thornton, Westminster, Castle Rock
Chloramine is what most of the metro tastes and smells. It doesn't gas off in a pitcher, so catalytic carbon is the answer rather than a fridge jug.
Carbon filtrationSoft water north
Boulder, Longmont, Fort Collins
These cities publish soft water, and Longmont's report says outright that a softener is not recommended. We don't sell them here. If taste is the problem, look at carbon or RO.
Reverse osmosisGet in touch
Find out what's in your water
Put in your address and we'll confirm we cover you, then book a time to test at your tap.