Hardness
Very Hard
282 PPM · 16.5 GPG
Local water dashboard
Official source aggregationWater quality in Parker, AZ 85344
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for La Paz County.
1 active health-based violation
- Primary matched system
- Epcor - Lakeside
- Source water
- Surface water + Groundwater
- County
- La Paz 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
7 systems
Serves 1,775 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
282 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
282
mg/L as CaCO₃ equivalent
Grains per gallon
16.5
1 GPG ≈ 17.1 PPM
What this means at home
At 282 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
19.2 mi
Observation range
Feb 11, 2016–Jun 10, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: COLORADO RIVER BELOW PALO VERDE DAM, AZ-CA (Stream).USGS source documentation ↗
Regional context
Is 85344 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Parker median
282 PPM
About the same1 indexed ZIP readings · Range 282–282 PPM
Arizona median
241 PPM
41 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)
1.62 mg/L
Reported Dec 31, 2015
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 1.62
EPA limit 1.3
Fluoride
Measured in MG/L
Local 4.6
EPA limit 4
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 90
- Health-based
- 3
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | AZ0415002 | Unaddressed | Mar 4, 2026 |
| Chlorine | AZ0415002 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Chlorine | AZ0415002 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Lead and Copper Rule | AZ0415002 | Resolved | Jan 1, 2026through Mar 12, 2026 |
| Chlorine | AZ0415002 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Chlorine | AZ0415002 | Archived | Dec 1, 2025through Dec 31, 2025 |
| Public Notice | AZ0415002 | Unaddressed | Nov 15, 2025 |
| Chlorine | AZ0415002 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Consumer Confidence Rule | AZ0415002 | Unaddressed | Oct 2, 2025 |
| Fluoride | AZ0415002 | Resolved | Oct 1, 2025through Dec 31, 2025 |
| Chlorine | AZ0415002 | Archived | Oct 1, 2025through Oct 31, 2025 |
| Revised Total Coliform Rule | AZ0415002 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Chlorine | AZ0415002 | Resolved | Sep 1, 2025through Sep 30, 2025 |
| Public Notice | AZ0415002 | Unaddressed | Jul 30, 2025 |
| Consumer Confidence Rule | AZ0415002 | Unaddressed | Jul 1, 2025 |
| Revised Total Coliform Rule | AZ0415002 | Resolved | May 1, 2025through May 31, 2025 |
| Public Notice | AZ0415002 | Unaddressed | Apr 1, 2025 |
| FluorideHealth-basedReported 4.6 MG/L · MCL 4 | AZ0415002 | Archived | Apr 1, 2025through Jun 30, 2025 |
| Chlorine | AZ0415002 | Resolved | Apr 1, 2025through Apr 30, 2025 |
| Public Notice | AZ0415002 | Unaddressed | Jan 16, 2025 |
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 Parker ZIP 85344 using 282 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
282 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), Fluoride 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 Parker
Is tap water safe in Parker?+
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 282 PPM, or 16.5 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 282 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.