Hardness
Very Hard
322 PPM · 18.8 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 Lawrence County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
322 PPM · 18.8 GPG
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0.0022 mg/L
15% of action level
Utility match
2 systems
Serves 6,395 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
322 PPM
Parts per million
322
mg/L as CaCO₃ equivalent
Grains per gallon
18.8
1 GPG ≈ 17.1 PPM
What this means at home
At 322 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
26
Nearest site
6.5 mi
Observation range
Jun 12, 2019–Sep 9, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: IN5247007 LAWRENCE 02237 PRODUCTION WELL 5 (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.
Mitchell median
322 PPM
About the same1 indexed ZIP readings · Range 322–322 PPM
Indiana median
313 PPM
9 PPM higher472 indexed ZIP readings · Range 132–371 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)
0.0022 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.
Measured in mg/L
Local 0.0022
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Groundwater RuleHealth-based | IN5247003 | Unaddressed | Oct 7, 2025 |
| Groundwater RuleHealth-based | IN5247003 | Unaddressed | Oct 7, 2025 |
| Consumer Confidence Rule | IN5247003 | Unaddressed | Oct 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | IN5247003 | Unaddressed | Jul 2, 2025 |
| Consumer Confidence Rule | IN5247003 | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | IN5247007 | Resolved | Oct 7, 2024through Oct 10, 2024 |
| Revised Total Coliform Rule | IN5247003 | Resolved | Sep 1, 2024through Oct 31, 2024 |
| Consumer Confidence Rule | IN5247003 | Resolved | Jul 1, 2024through Aug 6, 2024 |
| Lead and Copper Rule | IN5247003 | Resolved | Jan 1, 2024through Feb 4, 2025 |
| Lead and Copper Rule | IN5247003 | Unaddressed | Jan 1, 2021 |
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 Mitchell ZIP 47446 using 322 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
322 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
Groundwater Rule 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 2 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 322 PPM, or 18.8 grains per gallon, classified as very hard. This is not a household tap measurement.
At 322 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.