How hard is the water in Wheat Ridge, CO?
Reported by Denver Water Board · October 2025
- CO typical
- 97 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Wheat Ridge has about 96 mg/L of hardness, which is 5.6 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Denver Water Board, dated October 2025.
At 96 mg/L, Wheat Ridge is close to the typical Colorado figure of 97 mg/L. Of the 10 nearest cities we track, 1 has softer water and 7 have harder. The range nearby runs from 93 mg/L in Arvada to 127 in Shaw Heights.
What 96 mg/L means at home
You may see faint white spots on glasses and shower doors after the water dries.
Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
Optional. Plenty of households at this level live with it and descale the kettle now and then.
Water softener
Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.
Carbon filter
Improves taste and removes chlorine. It leaves calcium and magnesium in place.
3 people × 75 gallons a day × 5.6 gpg = 1,258 grains a day. A 24,000-grain unit regenerates about every 19 days.
EPA record for Wheat Ridge's water system
1 health-based violation since 2016
Serves about 20,000 people from surface water.
- Health-based
- 1
- Monitoring or reporting
- 0
- Open now
- 0
EPA lists Wheat Ridge Water District as the system serving Wheat Ridge. The hardness figure above comes from a different system's report, which TapWaterData uses for Wheat Ridge.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Disinfection byproducts ruletreatment requirement | 1 | 2017 | Resolved |
Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.
Questions
Is Wheat Ridge water hard?
Somewhat. It measures about 96 mg/L (5.6 grains per gallon), which the USGS classes as moderately hard.
What is the water hardness in Wheat Ridge in grains per gallon?
About 5.6 gpg. One grain per gallon equals 17.1 mg/L, so 96 mg/L divided by 17.1 gives 5.6.
What size water softener do I need in Wheat Ridge?
For 3 people using 75 gallons each per day, 5.6 gpg works out to about 1,258 grains a day. A 24,000-grain softener covers that with a regeneration about every 19 days.
Has the Wheat Ridge water system had EPA violations?
EPA records show 1 health-based violation for Wheat Ridge Water District since 2016, involving Disinfection byproducts rule.
Nearby cities
- Berkley96 mg/LModerately hard
- Arvada93 mg/LModerately hard
- Lakewood97 mg/LModerately hard
- Twin Lakes99 mg/LModerately hard
- Shaw Heights127 mg/LHard
- Sherrelwood100 mg/LModerately hard
- Westminster100 mg/LModerately hard
- Federal Heights119 mg/LModerately hard
- Welby96 mg/LModerately hard
- Sheridan101 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, October 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.