Hardness
Very Hard
226.5 PPM · 13.2 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 Sharp County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
226.5 PPM · 13.2 GPG
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0.005 mg/L
33% of action level
Utility match
1 system
Serves 1,186 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
226.5 PPM
Parts per million
226.5
mg/L as CaCO₃ equivalent
Grains per gallon
13.2
1 GPG ≈ 17.1 PPM
What this means at home
At 226.5 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
30
Nearest site
2.1 mi
Observation range
Mar 1, 2016–Aug 8, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 18N06W10CBC1 (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.
Ash Flat median
227 PPM
About the same1 indexed ZIP readings · Range 226.5–226.5 PPM
Arkansas median
71 PPM
156 PPM higher210 indexed ZIP readings · Range 4.8–283 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)
0.005 mg/L
Reported Dec 31, 2002
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.
Measured in mg/L
Local 0.005
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | AR0000527 | Unaddressed | Apr 30, 2026 |
| LEAD AND COPPER RULE REVISIONSHealth-based | AR0000527 | Unaddressed | Apr 30, 2026 |
| Chlorine | AR0000527 | Resolved | Jan 1, 2023through Mar 31, 2023 |
| Consumer Confidence Rule | AR0000527 | Resolved | Jul 1, 2021through Apr 14, 2023 |
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 Ash Flat ZIP 72513 using 226.5 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
226.5 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
LEAD AND COPPER RULE REVISIONS has 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 reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 226.5 PPM, or 13.2 grains per gallon, classified as very hard. This is not a household tap measurement.
At 226.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.