Hardness
Hard
163 PPM · 9.5 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
Hard
163 PPM · 9.5 GPG
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0.006 mg/L
40% of action level
Utility match
2 systems
Serves 1,120 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
163 PPM
Parts per million
163
mg/L as CaCO₃ equivalent
Grains per gallon
9.5
1 GPG ≈ 17.1 PPM
What this means at home
At 163 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
20
Nearest site
23.4 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.
Concho median
163 PPM
About the same1 indexed ZIP readings · Range 163–163 PPM
Arizona median
241 PPM
78 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)
0.006 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 0.006
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | AZ0401011 | Resolved | Jan 1, 2026through Mar 25, 2026 |
| Chlorine | AZ0401011 | Resolved | Dec 1, 2025through Dec 31, 2025 |
| Chlorine | AZ0401011 | Resolved | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | AZ0401011 | Resolved | Nov 1, 2025through Nov 30, 2025 |
| Chlorine | AZ0401011 | Resolved | Oct 1, 2025through Oct 31, 2025 |
| Revised Total Coliform Rule | AZ0401011 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Consumer Confidence Rule | AZ0401011 | Resolved | Jul 1, 2025through Oct 10, 2025 |
| Chlorine | AZ0401011 | Resolved | Apr 1, 2025through Apr 30, 2025 |
| Chlorine | AZ0401011 | Resolved | Feb 1, 2025through Feb 28, 2025 |
| TTHM | AZ0401011 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5) | AZ0401011 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | AZ0401011 | Resolved | Jan 1, 2025through Jan 31, 2025 |
| Revised Total Coliform Rule | AZ0401011 | Resolved | Dec 1, 2024through Dec 31, 2024 |
| Chlorine | AZ0401011 | Resolved | Dec 1, 2024through Dec 31, 2024 |
| Consumer Confidence Rule | AZ0401011 | Resolved | Oct 2, 2024through Jul 4, 2025 |
| Lead and Copper Rule | AZ0401011 | Resolved | Oct 1, 2024through Aug 25, 2025 |
| Chlorine | AZ0401011 | Resolved | Sep 1, 2024through Sep 30, 2024 |
| Chlorine | AZ0401011 | Resolved | Aug 1, 2024through Aug 31, 2024 |
| Chlorine | AZ0401011 | Resolved | Jul 1, 2024through Jul 31, 2024 |
| Consumer Confidence Rule | AZ0401011 | Resolved | Jul 1, 2024through Jul 4, 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 Concho ZIP 85924 using 163 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
163 PPM is 1× 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
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 163 PPM, or 9.5 grains per gallon, classified as hard. This is not a household tap measurement.
At 163 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.