Hardness
Very Hard
236 PPM · 13.8 GPG
Local water dashboard
Official source aggregationWater quality in Red Rock, AZ 85145
A 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.
No active health-based violation reported
- Primary matched system
- Gw Santa Cruz Water Co - Red Rock
- Source water
- Groundwater
- County
- Pinal County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
3 systems
Serves 3,813 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
236 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
236
mg/L as CaCO₃ equivalent
Grains per gallon
13.8
1 GPG ≈ 17.1 PPM
What this means at home
At 236 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
11
Nearest site
21.8 mi
Observation range
Jan 11, 2016–Apr 25, 2018
Estimate confidence
Moderate
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
Is 85145 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Red Rock median
743 PPM
507 PPM lower2 indexed ZIP readings · Range 236–1250 PPM
Arizona median
241 PPM
5 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
- 25
- Health-based
- 1
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | AZ0411090 | Unaddressed | Nov 16, 2025 |
| Lead and Copper Rule | AZ0411547 | Resolved | Jul 29, 2025through Mar 11, 2026 |
| Public Notice | AZ0411090 | Resolved | Jul 25, 2025through Jan 14, 2026 |
| LEAD AND COPPER RULE REVISIONS | AZ0411090 | Unaddressed | Jul 2, 2025 |
| Lead and Copper Rule | AZ0411547 | Resolved | Jul 1, 2025through Jul 25, 2025 |
| Lead and Copper Rule | AZ0411547 | Unaddressed | Jan 1, 2025 |
| Public Notice | AZ0411547 | Resolved | Dec 20, 2024through Jun 18, 2025 |
| Revised Total Coliform Rule | AZ0411090 | Resolved | Nov 1, 2024through Dec 20, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | AZ0411547 | Resolved | Oct 17, 2024through Jan 6, 2025 |
| LEAD AND COPPER RULE REVISIONS | AZ0411547 | Resolved | Oct 17, 2024through Jan 6, 2025 |
| Lead and Copper Rule | AZ0411547 | Resolved | Oct 1, 2024through Jan 31, 2025 |
| Revised Total Coliform Rule | AZ0411090 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Revised Total Coliform Rule | AZ0411090 | Resolved | Aug 1, 2024through Dec 9, 2024 |
| Nitrate | AZ0411547 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Revised Total Coliform Rule | AZ0411090 | Resolved | Jun 1, 2024through Jun 30, 2024 |
| Chlorine | AZ0411547 | Resolved | Feb 1, 2024through Feb 29, 2024 |
| TTHM | AZ0411547 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | AZ0411547 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Revised Total Coliform Rule | AZ0411090 | Resolved | Oct 1, 2023through Feb 27, 2024 |
| Revised Total Coliform Rule | AZ0411160 | Resolved | Sep 1, 2023through Feb 27, 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 Red Rock ZIP 85145 using 236 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
236 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.
Nearby indexed reports
Compare ZIPs in Red Rock
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Red Rock
Is tap water safe in Red Rock?+
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.
How hard is the water?+
Nearby USGS observations produce an estimate of 236 PPM, or 13.8 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 236 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.