Hardness
Moderately Hard
106 PPM · 6.2 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Apache County.
At a glance
EPA quarter 2026Q2
Hardness
Moderately Hard
106 PPM · 6.2 GPG
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
7 systems
Serves 1,564 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
106 PPM
Parts per million
106
mg/L as CaCO₃ equivalent
Grains per gallon
6.2
1 GPG ≈ 17.1 PPM
What this means at home
At 106 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
17
Nearest site
18.1 mi
Observation range
Jul 12, 2017–Jun 18, 2020
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: A-11-22 15ADB (Well).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Vernon median
106 PPM
About the same1 indexed ZIP readings · Range 106–106 PPM
Arizona median
241 PPM
135 PPM lower285 indexed ZIP readings · Range 66.4–1250 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
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.
Measured in mg/L
Local 0
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | AZ0401054 | Resolved | Feb 1, 2026through Feb 28, 2026 |
| Lead and Copper Rule | AZ0401076 | Resolved | Jan 1, 2026through Mar 25, 2026 |
| Lead and Copper Rule | AZ0401039 | Unaddressed | Jan 1, 2026 |
| E. COLI | AZ0401047 | Resolved | Dec 27, 2025through Feb 20, 2026 |
| Revised Total Coliform Rule | AZ0401049 | Resolved | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | AZ0401047 | Resolved | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | AZ0401054 | Resolved | Nov 1, 2025through Nov 30, 2025 |
| Consumer Confidence Rule | AZ0401076 | Resolved | Oct 2, 2025through Oct 7, 2025 |
| Consumer Confidence Rule | AZ0401039 | Unaddressed | Oct 2, 2025 |
| Lead and Copper Rule | AZ0401047 | Resolved | Oct 1, 2025through Dec 2, 2025 |
| Revised Total Coliform Rule | AZ0401049 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Revised Total Coliform Rule | AZ0401047 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Revised Total Coliform Rule | AZ0401047 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| LEAD AND COPPER RULE REVISIONS | AZ0401019 | Unaddressed | Jul 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | AZ0401039 | Resolved | Jul 2, 2025through Jan 12, 2026 |
| Consumer Confidence Rule | AZ0401076 | Resolved | Jul 1, 2025through Oct 7, 2025 |
| Consumer Confidence Rule | AZ0401039 | Unaddressed | Jul 1, 2025 |
| Lead and Copper Rule | AZ0401047 | Resolved | Jan 1, 2025through Oct 9, 2025 |
| Lead and Copper Rule | AZ0401039 | Unaddressed | Jan 1, 2025 |
| Lead and Copper Rule | AZ0401076 | Resolved | Oct 1, 2024through Aug 19, 2025 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Matched to Vernon ZIP 85940 using 106 PPM nearby hardness and 1 reported measurement benchmarks.
No urgent match
This profile does not trigger a treatment recommendation. Test at the tap before investing in equipment.
Affiliate 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
EPA ECHO reports 2 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 106 PPM, or 6.2 grains per gallon, classified as moderately hard. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.