Hardness
Very Hard
241 PPM · 14.1 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 Pinal County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
241 PPM · 14.1 GPG
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
2 systems
Serves 340 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
241 PPM
Parts per million
241
mg/L as CaCO₃ equivalent
Grains per gallon
14.1
1 GPG ≈ 17.1 PPM
What this means at home
At 241 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
16
Nearest site
28.5 mi
Observation range
Jan 11, 2016–Dec 17, 2024
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: D-13-12 03BCC1 (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.
Picacho median
241 PPM
About the same1 indexed ZIP readings · Range 241–241 PPM
Arizona median
241 PPM
About the same285 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
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0
EPA limit 0.015
Measured in MG/L
Local 12
EPA limit 10
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform RuleHealth-based | AZ0411038 | Resolved | Jan 3, 2026through Jan 12, 2026 |
| Consumer Confidence Rule | AZ0411042 | Resolved | Oct 2, 2025through Nov 4, 2025 |
| Public Notice | AZ0411038 | Resolved | Apr 11, 2025through Dec 8, 2025 |
| Public Notice | AZ0411038 | Resolved | Apr 11, 2025through Nov 26, 2025 |
| Groundwater RuleHealth-based | AZ0411038 | Resolved | Feb 19, 2025through May 14, 2025 |
| Groundwater RuleHealth-based | AZ0411038 | Resolved | Feb 19, 2025through Mar 28, 2025 |
| Lead and Copper Rule | AZ0411038 | Resolved | Jan 1, 2025through Dec 9, 2025 |
| Groundwater RuleHealth-based | AZ0411038 | Unaddressed | Nov 21, 2024 |
| Groundwater RuleHealth-based | AZ0411038 | Unaddressed | Nov 6, 2024 |
| LEAD AND COPPER RULE REVISIONS | AZ0411038 | Resolved | Oct 17, 2024through Dec 5, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | AZ0411038 | Resolved | Oct 17, 2024through Dec 5, 2024 |
| Lead and Copper Rule | AZ0411038 | Resolved | Oct 1, 2024through Dec 18, 2024 |
| Public Notice | AZ0411038 | Resolved | Apr 13, 2024through Oct 10, 2024 |
| Chlorine | AZ0411042 | Resolved | Mar 1, 2024through Mar 31, 2024 |
| Lead and Copper Rule | AZ0411042 | Resolved | Jan 1, 2024through Mar 18, 2026 |
| NitrateHealth-basedReported 12 MG/L · MCL 10 | AZ0411038 | Resolved | Jan 1, 2024through Dec 6, 2024 |
| Public Notice | AZ0411042 | Resolved | Nov 3, 2023through Jul 1, 2024 |
| Consumer Confidence Rule | AZ0411042 | Resolved | Oct 2, 2023through Aug 8, 2024 |
| Chlorine | AZ0411042 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Consumer Confidence Rule | AZ0411042 | Resolved | Jul 1, 2023through Jun 12, 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
Matched to Picacho ZIP 85141 using 241 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
241 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 systemsDrinking water protection
Nitrate, Groundwater Rule have a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate 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 241 PPM, or 14.1 grains per gallon, classified as very hard. This is not a household tap measurement.
At 241 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.