Hardness
Very Hard
308.5 PPM · 18 GPG
Local water dashboard
Official source aggregationWater quality in Warsaw, IN 46580
A 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.
3 active health-based violations
- Primary matched system
- Indiana American Water - Warsaw
- Source water
- Groundwater
- County
- Kosciusko County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
3 active health-based records
Lead 90th percentile
3.2e-4 mg/L
2% of action level
Utility match
10 systems
Serves 13,835 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
308.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
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
44.2 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
Is 46580 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Warsaw median
308 PPM
About the same2 indexed ZIP readings · Range 307–308.5 PPM
Indiana median
313 PPM
About the same472 indexed ZIP readings · Range 132–371 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)
3.2e-4 mg/L
Reported Dec 31, 2026
Copper (CU90)
1.58 mg/L
Reported Jun 30, 1993
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 3.2e-4
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 1.58
EPA limit 1.3
Arsenic
Measured in MG/L
Local 0.013
EPA limit 0.01
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 79
- Health-based
- 7
- Active health-based
- 3
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | IN5243033 | Unaddressed | Jan 1, 2026 |
| ArsenicHealth-basedReported 0.013 MG/L · MCL 0.01 | IN5243010 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Public Notice | IN5243010 | Unaddressed | Dec 2, 2025 |
| Public Notice | IN5243047 | Unaddressed | Dec 2, 2025 |
| Consumer Confidence Rule | IN5243028 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | IN5243010 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | IN5243007 | Resolved | Oct 1, 2025through Jan 2, 2026 |
| Consumer Confidence Rule | IN5243040 | Resolved | Oct 1, 2025through Jan 2, 2026 |
| Consumer Confidence Rule | IN5243047 | Unaddressed | Oct 1, 2025 |
| Groundwater RuleHealth-based | IN5243047 | Unaddressed | Sep 4, 2025 |
| Groundwater Rule | IN5243047 | Unaddressed | Aug 12, 2025 |
| LEAD AND COPPER RULE REVISIONS | IN5243007 | Unaddressed | Jul 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | IN5243040 | Resolved | Jul 2, 2025through Dec 30, 2025 |
| Consumer Confidence Rule | IN5243033 | Resolved | Jul 1, 2025through Nov 4, 2025 |
| Consumer Confidence Rule | IN5243006 | Resolved | Jul 1, 2025through Oct 20, 2025 |
| Consumer Confidence Rule | IN5243028 | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | IN5243024 | Resolved | Jul 1, 2025through Nov 19, 2025 |
| Consumer Confidence Rule | IN5243007 | Resolved | Jul 1, 2025through Jan 2, 2026 |
| Consumer Confidence Rule | IN5243040 | Resolved | Jul 1, 2025through Jan 2, 2026 |
| Consumer Confidence Rule | IN5243047 | Unaddressed | Jul 1, 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 Warsaw ZIP 46580 using 308.5 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
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
Under-Sink Reverse Osmosis System
Copper (90th percentile), Arsenic, Groundwater Rule 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.
Nearby indexed reports
Compare ZIPs in Warsaw
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Warsaw
Is tap water safe in Warsaw?+
EPA ECHO reports 3 active health-based violations 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 308.5 PPM, or 18 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 308.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.