Hardness
Very Hard
308.5 PPM · 18 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 Kosciusko County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
308.5 PPM · 18 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
5 systems
Serves 928 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
308.5 PPM
Parts per million
308.5
mg/L as CaCO₃ equivalent
Grains per gallon
18
1 GPG ≈ 17.1 PPM
What this means at home
At 308.5 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
32
Nearest site
45.5 mi
Observation range
Jun 20, 2016–May 13, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Shavehead Lake Fen piezometer 2b- Cass County, MI (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.
Pierceton median
309 PPM
About the same1 indexed ZIP readings · Range 308.5–308.5 PPM
Indiana median
313 PPM
About the same472 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 mg/L
Reported Dec 31, 2027
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.
Measured in mg/L
Local 0
EPA limit 0.015
Measured in MG/L
Local 0.0102
EPA limit 0.01
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Groundwater RuleHealth-based | IN5243064 | Resolved | Jan 21, 2026through Mar 26, 2026 |
| Lead and Copper Rule | IN5243063 | Unaddressed | Jan 1, 2026 |
| Lead and Copper Rule | IN5243064 | Unaddressed | Jan 1, 2026 |
| Public Notice | IN5243063 | Unaddressed | Dec 2, 2025 |
| Revised Total Coliform Rule | IN5243063 | Resolved | Dec 1, 2025through Feb 12, 2026 |
| Lead and Copper Rule | IN5243063 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | IN5243063 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | IN5243064 | Resolved | Oct 1, 2025through Jan 2, 2026 |
| Groundwater RuleHealth-based | IN5243014 | Resolved | Sep 19, 2025through Feb 20, 2026 |
| Groundwater Rule | IN5243014 | Resolved | Aug 9, 2025through Feb 20, 2026 |
| Consumer Confidence Rule | IN5243063 | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | IN5243064 | Resolved | Jul 1, 2025through Jan 2, 2026 |
| Revised Total Coliform Rule | IN5243011 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Public Notice | IN5243063 | Unaddressed | Jan 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | IN5243063 | Resolved | Oct 17, 2024through Dec 10, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | IN5243063 | Resolved | Oct 17, 2024through Dec 10, 2024 |
| Consumer Confidence Rule | IN5243063 | Resolved | Oct 10, 2024through Nov 26, 2024 |
| Consumer Confidence Rule | IN5243063 | Resolved | Jul 1, 2024through Nov 26, 2024 |
| Consumer Confidence Rule | IN5243064 | Resolved | Jul 1, 2024through Sep 16, 2024 |
| ArsenicHealth-basedReported 0.0102 MG/L · MCL 0.01 | IN5243064 | Archived | Jul 1, 2024through Sep 30, 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
Matched to Pierceton ZIP 46562 using 308.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
308.5 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
Arsenic 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 shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
Nearby USGS observations produce an estimate of 308.5 PPM, or 18 grains per gallon, classified as very hard. This is not a household tap measurement.
At 308.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.