Hardness
Very Hard
336 PPM · 19.6 GPG
Local water dashboard
Official source aggregationWater quality in White Hills, AZ 86445
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Mohave County.
6 active health-based violations
- Primary matched system
- Cs White Hills Water Company Unit 1
- Source water
- Groundwater
- County
- Mohave County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
6 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
3 systems
Serves 338 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
336 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
336
mg/L as CaCO₃ equivalent
Grains per gallon
19.6
1 GPG ≈ 17.1 PPM
What this means at home
At 336 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
18
Nearest site
21.1 mi
Observation range
Jan 31, 2017–Apr 22, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: B-30-23 26BCC1 (Spring).USGS source documentation ↗
Regional context
Is 86445 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
White Hills median
336 PPM
About the same1 indexed ZIP readings · Range 336–336 PPM
Arizona median
241 PPM
95 PPM higher285 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 pass1 fail
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.
Lead (90th percentile)
Measured in mg/L
Local 0
EPA limit 0.015
Arsenic
Measured in MG/L
Local 0.011
EPA limit 0.01
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 58
- Health-based
- 8
- Active health-based
- 6
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | AZ0408150 | Resolved | Nov 15, 2025through Mar 23, 2026 |
| Consumer Confidence Rule | AZ0408150 | Resolved | Oct 2, 2025through Dec 18, 2025 |
| Lead and Copper Rule | AZ0408150 | Resolved | Oct 1, 2025through Oct 24, 2025 |
| LEAD AND COPPER RULE REVISIONS | AZ0408150 | Unaddressed | Jul 2, 2025 |
| Total Haloacetic Acids (HAA5) | AZ0408149 | Unaddressed | Jul 1, 2025through Jun 30, 2026 |
| Arsenic | AZ0408149 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| TTHM | AZ0408149 | Unaddressed | Jul 1, 2025through Jun 30, 2026 |
| Total Haloacetic Acids (HAA5) | AZ0408039 | Unaddressed | Jul 1, 2025through Jun 30, 2026 |
| TTHM | AZ0408039 | Unaddressed | Jul 1, 2025through Jun 30, 2026 |
| Chlorine | AZ0408150 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Consumer Confidence Rule | AZ0408150 | Resolved | Jul 1, 2025through Dec 17, 2025 |
| Arsenic | AZ0408149 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| Chlorine | AZ0408150 | Archived | Apr 1, 2025through Apr 30, 2025 |
| Public Notice | AZ0408150 | Resolved | Jan 2, 2025through Jul 17, 2025 |
| Lead and Copper Rule | AZ0408039 | Resolved | Jan 1, 2025through Aug 4, 2025 |
| TTHM | AZ0408150 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5) | AZ0408150 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Lead and Copper Rule | AZ0408150 | Resolved | Jan 1, 2025through Nov 15, 2025 |
| Groundwater RuleHealth-based | AZ0408150 | Addressed | Oct 20, 2024 |
| Groundwater RuleHealth-based | AZ0408150 | Addressed | Oct 20, 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 White Hills ZIP 86445 using 336 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
336 PPM is 3× 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
Under-Sink Reverse Osmosis System
Arsenic, 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
Water questions for White Hills
Is tap water safe in White Hills?+
EPA ECHO reports 6 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Nearby USGS observations produce an estimate of 336 PPM, or 19.6 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 336 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.