Hardness
Very Hard
257 PPM · 15 GPG
Local water dashboard
Official source aggregationWater quality in Wickenburg, AZ 85390
A 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.
1 active health-based violation
- Primary matched system
- Wickenburg Town Of
- Source water
- Groundwater
- County
- Maricopa County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
5 systems
Serves 6,481 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
257 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
257
mg/L as CaCO₃ equivalent
Grains per gallon
15
1 GPG ≈ 17.1 PPM
What this means at home
At 257 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
47
Nearest site
20.4 mi
Observation range
Jun 6, 2017–Dec 18, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: B-05-03 15AAA (Well).USGS source documentation ↗
Regional context
Is 85390 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Wickenburg median
257 PPM
About the same1 indexed ZIP readings · Range 257–257 PPM
Arizona median
241 PPM
16 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 pass2 fail
Lead (PB90)
0 mg/L
Reported Dec 31, 2025
Copper (CU90)
1.37 mg/L
Reported Jun 30, 2016
Numerical coverage
3 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
Copper (90th percentile)
Measured in mg/L
Local 1.37
EPA limit 1.3
Nitrate
Measured in MG/L
Local 10.8
EPA limit 10
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 45
- Health-based
- 3
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | AZ0407012 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Lead and Copper Rule | AZ0407493 | Unaddressed | Jan 1, 2026 |
| Consumer Confidence Rule | AZ0407045 | Unaddressed | Oct 2, 2025 |
| Consumer Confidence Rule | AZ0407493 | Unaddressed | Oct 2, 2025 |
| Chlorine | AZ0407021 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Chlorine | AZ0407012 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Public Notice | AZ0407021 | Resolved | Aug 28, 2025through Sep 11, 2024 |
| Chlorine | AZ0407021 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Chlorine | AZ0407012 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| E. COLI | AZ0407045 | Unaddressed | Jul 31, 2025 |
| Chlorine | AZ0407021 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Chlorine | AZ0407012 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Lead and Copper Rule | AZ0407012 | Resolved | Jan 1, 2025through May 7, 2025 |
| LEAD AND COPPER RULE REVISIONS | AZ0407493 | Addressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | AZ0407493 | Addressed | Oct 17, 2024 |
| Revised Total Coliform Rule | AZ0407021 | Resolved | Jul 1, 2024through Jul 31, 2024 |
| Revised Total Coliform Rule | AZ0407012 | Resolved | Jul 1, 2024through Jul 31, 2024 |
| Chlorine | AZ0407012 | Resolved | Apr 1, 2024through Apr 30, 2024 |
| Chlorine | AZ0407012 | Resolved | Feb 1, 2024through Feb 29, 2024 |
| Revised Total Coliform Rule | AZ0407045 | Resolved | Jan 1, 2024through Feb 26, 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 Wickenburg ZIP 85390 using 257 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
257 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
Under-Sink Reverse Osmosis System
Copper (90th percentile), Nitrate, LEAD AND COPPER RULE REVISIONS 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 Wickenburg
Is tap water safe in Wickenburg?+
EPA ECHO reports 1 active health-based violation 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 257 PPM, or 15 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 257 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.