Hardness
Very Hard
228 PPM · 13.3 GPG
Local water dashboard
Official source aggregationWater quality in Star Valley, AZ 85541
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Gila County.
1 active health-based violation
- Primary matched system
- Town Of Star Valley Water Department
- Source water
- Groundwater
- County
- Gila County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
3 systems
Serves 1,157 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
228 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
228
mg/L as CaCO₃ equivalent
Grains per gallon
13.3
1 GPG ≈ 17.1 PPM
What this means at home
At 228 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
21
Nearest site
48 mi
Observation range
Jun 27, 2016–May 1, 2024
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: A-18-09 29CAA02 (Well).USGS source documentation ↗
Regional context
Is 85541 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Star Valley median
228 PPM
About the same1 indexed ZIP readings · Range 228–228 PPM
Arizona median
241 PPM
13 PPM lower285 indexed ZIP readings · Range 66.4–1250 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
1 pass
Lead (PB90)
0 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
1 comparable result
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 36
- Health-based
- 2
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | AZ0404069 | Resolved | Nov 9, 2025through Jan 2, 2026 |
| Consumer Confidence Rule | AZ0404324 | Unaddressed | Oct 2, 2025 |
| Consumer Confidence Rule | AZ0404069 | Unaddressed | Oct 2, 2025 |
| Consumer Confidence Rule | AZ0404324 | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | AZ0404069 | Unaddressed | Jul 1, 2025 |
| Public Notice | AZ0404069 | Unaddressed | Dec 20, 2024 |
| LEAD AND COPPER RULE REVISIONS | AZ0404069 | Resolved | Oct 17, 2024through Jan 13, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | AZ0404069 | Resolved | Oct 17, 2024through Jan 13, 2025 |
| Nitrate | AZ0404037 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Nitrate | AZ0404037 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Nitrate | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| 1,2,4-Trichlorobenzene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| cis-1,2-Dichloroethylene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| Xylenes, Total | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| DICHLOROMETHANE | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| o-Dichlorobenzene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| p-Dichlorobenzene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| trans-1,2-Dichloroethylene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| 1,2-Dichloropropane | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
| Toluene | AZ0404037 | Resolved | Jan 1, 2024through Jul 25, 2024 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Star Valley ZIP 85541 using 228 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
228 PPM is 2× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
Water questions for Star Valley
Is tap water safe in Star Valley?+
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Nearby USGS observations produce an estimate of 228 PPM, or 13.3 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 228 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.