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Grand Junction hard water guide (2026)

Who supplies your water, what the reports say, what softeners and RO do, and who is allowed to install them in Colorado.

Updated October 24, 2026. This guide is general information, not legal or engineering advice. Rules change, so confirm with the agency listed before you start work.

Quick reference

TopicWhat to knowSource
Ute Water hardnessRecent weekly reading 170 mg/L (about 10 gpg); Ute's scale calls 121 to 180 mg/L hardUte Water Conservancy District
Ute Water sourcesGrand Mesa, Plateau Creek watershed; Colorado River secondaryUte Water; KJCT (2026)
City of Grand Junction sourcesKannah Creek, Purdy Mesa and Somerville flowlines; Gunnison River pump stationCity of Grand Junction 2026 report (2025 data)
Sodium in tap waterCity of Grand Junction 9.52 ppm (2025); Clifton Water 81.6 ppm (2022 report)City of Grand Junction; Clifton Water District
When to softenWaterSense suggests above 180 mg/L or 10 gpg, or when locally recommendedEPA WaterSense
Efficient softenerNSF/ANSI 44; 4 gallons or less per 1,000 grains; over 3,350 grains per pound of saltEPA WaterSense
Installer rulesPlumbing contractor, or registered water conditioning contractor, principal and installer (since April 1, 2016)C.R.S. 12-155-108
Building permitsMesa County Building Department for Grand Junction, Palisade and unincorporated areasMesa County

How hard is the water in Grand Junction?

It depends on your provider. Ute Water Conservancy District, which serves about 92,000 residential customers across the valley, posts a weekly dashboard of the prior week's water quality. A recent reading showed hardness of 170 mg/L. Ute's own guidelines call 0 to 60 mg/L soft, 61 to 120 moderately hard, 121 to 180 hard and over 180 very hard, and it converts mg/L to grains per gallon by dividing by 17.1, so 170 mg/L is about 10 grains per gallon. The annual reports from the City of Grand Junction and the Clifton Water District don't list hardness, so test your tap if you're on either system.

Where does the water come from?

The City of Grand Junction's 2026 report, covering 2025, lists surface water from the Kannah Creek, Purdy Mesa and Somerville flowlines and a Gunnison River pump station, plus connections to Ute and Clifton. The city maintains several Grand Mesa reservoirs, including Juniata and Purdy Mesa. Ute's water comes mainly from the Grand Mesa in the Plateau Creek watershed, with the Jerry Creek Reservoirs as its preferred source and the Colorado River as a secondary source. Clifton Water District draws from a Colorado River diversion and the Grand Valley Canal and buys from Ute and the city. The Town of Palisade's report lists springs and creek intakes on the Rapid Creek and Cottonwood Creek drainages, plus purchased Ute water.

What else do the reports show?

The City of Grand Junction's latest report lists arsenic at 0.44 parts per billion (the limit is 10) and nitrate at 0.06 ppm (the limit is 10), with no violations. Its lead sampling in 2024 had a 90th percentile of 8.2 ppb, under the 15 ppb action level, though 3 of 32 sites were above it. A softener doesn't treat lead. If you're concerned, ask about point-of-use filters certified for lead, and read the city's guidance in the report.

Do I need a softener?

It's a judgment call. EPA WaterSense suggests installing one when hardness is substantial, such as above 180 mg/L or 10 grains per gallon, or when a local authority or code recommends it. Ute's recent reading sits just under that line. Hardness at that level leaves scale on fixtures and in water heaters; whether that's worth the salt, water and upkeep is up to you.

How do I choose an efficient softener?

WaterSense notes that typical softeners use 20 to 70 gallons of water per regeneration, and some larger systems use up to 200. It recommends softeners certified to NSF/ANSI 44, demand-initiated regeneration, a water use of 4 gallons or less per 1,000 grains of hardness removed, and a salt efficiency above 3,350 grains per pound of salt.

Is softened water safe to drink?

The Minnesota Department of Health says drinking softened water poses no known health hazard for most people, but those on medically restricted sodium diets should consult their physician before drinking it regularly. A separate unsoftened tap or a reverse osmosis faucet is the usual solution. That matters more where the starting sodium is already high, as in Clifton Water's 81.6 ppm.

What about private wells?

No utility tests a private well for you. USGS research in the irrigated Grand and Uncompahgre valleys found that shallow groundwater in alluvium over Mancos Shale can carry high levels of dissolved selenium. If you rely on a well, get a lab test before buying treatment equipment.

Who can install a water softener in Colorado?

Under C.R.S. 12-155-108, effective April 1, 2016, a business doing water conditioning work for others must be a registered water conditioning contractor that is, or employs full-time, a registered water conditioning principal responsible for the work, unless it works as a licensed plumbing operation. Installers and principals must register with the State Plumbing Board and show certification from a national water conditioning association recognized by the board. The state statute defines a water conditioning contractor's scope as one- to four-family homes of no more than two stories. Ask for the company's registration and check it with the Colorado Division of Professions and Occupations.

Questions to ask a water treatment company

  • Are you a registered water conditioning contractor or a plumbing contractor?
  • What hardness did you measure at my tap, and how did you size the unit?
  • Is the unit certified to NSF/ANSI 44, and how much water does it use to regenerate?
  • Will irrigation and outdoor lines stay on hard water?
  • Does this job need a permit, and who pulls it?

Common questions

How hard is Grand Junction water?

It depends on the provider. A recent Ute Water reading was 170 mg/L, about 10 grains per gallon. The city and Clifton reports don't list hardness, so test your tap.

Who can install a water softener in Colorado?

A plumbing contractor, or a water conditioning contractor registered with the State Plumbing Board that has a registered principal and certified installers.

Does a softener add sodium to my water?

Yes. Salt-based softeners swap hardness for sodium. People on sodium-restricted diets should ask a doctor before drinking softened water regularly.

Sources

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