Hardness
Very Hard
247.5 PPM · 14.5 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 Maricopa County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
247.5 PPM · 14.5 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
1 system
Serves 345 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
247.5 PPM
Parts per million
247.5
mg/L as CaCO₃ equivalent
Grains per gallon
14.5
1 GPG ≈ 17.1 PPM
What this means at home
At 247.5 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
50
Nearest site
13.2 mi
Observation range
Jun 27, 2016–Dec 18, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: A-05-02 35ACB2 (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.
New River median
248 PPM
About the same1 indexed ZIP readings · Range 247.5–247.5 PPM
Arizona median
241 PPM
7 PPM higher285 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, 2024
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
4 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 PCI/L
Local 6
EPA limit 5
Measured in PCI/L
Local 17
EPA limit 15
Measured in MG/L
Local 0.013
EPA limit 0.01
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | AZ0407660 | Unaddressed | Jul 2, 2025 |
| Combined Radium (-226 and -228)Health-basedReported 6 PCI/L · MCL 5 | AZ0407660 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 17 PCI/L · MCL 15 | AZ0407660 | Archived | Apr 1, 2025through Jun 30, 2025 |
| Public Notice | AZ0407660 | Resolved | Feb 13, 2025through Jun 2, 2025 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 18 PCI/L · MCL 15 | AZ0407660 | Archived | Jan 1, 2025through Mar 31, 2025 |
| Lead and Copper Rule | AZ0407660 | Unaddressed | Jan 1, 2025 |
| Combined Radium (-226 and -228)Health-basedReported 6 PCI/L · MCL 5 | AZ0407660 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Revised Total Coliform Rule | AZ0407660 | Resolved | Nov 1, 2024through Dec 24, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 18 PCI/L · MCL 15 | AZ0407660 | Archived | Oct 1, 2024through Dec 31, 2024 |
| Revised Total Coliform Rule | AZ0407660 | Resolved | Aug 1, 2024through Aug 31, 2024 |
| Public Notice | AZ0407660 | Resolved | May 20, 2022through Jun 6, 2022 |
| Combined Uranium | AZ0407660 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Radium-226 | AZ0407660 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Radium-228 | AZ0407660 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Combined Radium (-226 and -228) | AZ0407660 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Gross Alpha, Excl. Radon and U | AZ0407660 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Public Notice | AZ0407660 | Resolved | Feb 4, 2022through Jun 6, 2022 |
| ArsenicHealth-basedReported 0.013 MG/L · MCL 0.01 | AZ0407660 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| Lead and Copper Rule | AZ0407660 | Resolved | Oct 11, 2021through Dec 1, 2021 |
| ArsenicHealth-basedReported 0.015 MG/L · MCL 0.01 | AZ0407660 | Resolved | Oct 1, 2021through Dec 31, 2021 |
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 New River ZIP 85087 using 247.5 PPM nearby hardness and 4 reported measurement benchmarks.
Scale protection
247.5 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
Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U, Arsenic 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 shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
Nearby USGS observations produce an estimate of 247.5 PPM, or 14.5 grains per gallon, classified as very hard. This is not a household tap measurement.
At 247.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.