Hardness
Very Hard
337 PPM · 19.7 GPG
Local water dashboard
Official source aggregationWater quality in Huntington, IN 46750
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Huntington County.
1 active health-based violation
- Primary matched system
- Huntington Water Department
- Source water
- Groundwater
- County
- Huntington 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
0.0069 mg/L
46% of action level
Utility match
3 systems
Serves 17,300 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
337 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
337
mg/L as CaCO₃ equivalent
Grains per gallon
19.7
1 GPG ≈ 17.1 PPM
What this means at home
At 337 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
38
Nearest site
37.9 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: NAWQA AG WELL TP14 NEAR GASTON, IN (Well).USGS source documentation ↗
Regional context
Is 46750 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Huntington median
337 PPM
About the same1 indexed ZIP readings · Range 337–337 PPM
Indiana median
313 PPM
24 PPM higher472 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 pass1 fail
Lead (PB90)
0.0069 mg/L
Reported Dec 31, 2025
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.
Lead (90th percentile)
Measured in mg/L
Local 0.0069
EPA limit 0.015
TTHM
Measured in UG/L
Local 96.5
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 49
- Health-based
- 12
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | IN5235004 | Unaddressed | Dec 2, 2025 |
| Consumer Confidence Rule | IN5235004 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | IN5235004 | Unaddressed | Jul 1, 2025 |
| Groundwater RuleHealth-based | IN5235004 | Resolved | Jan 19, 2025through Mar 11, 2026 |
| Groundwater RuleHealth-based | IN5235004 | Resolved | Jan 19, 2025through Feb 24, 2026 |
| Groundwater RuleHealth-based | IN5235004 | Resolved | Jan 19, 2025through Jun 11, 2025 |
| Groundwater RuleHealth-based | IN5235004 | Resolved | Jan 19, 2025through Jun 11, 2025 |
| Groundwater RuleHealth-based | IN5235004 | Unaddressed | Jan 19, 2025 |
| Groundwater RuleHealth-based | IN5235004 | Resolved | Jan 19, 2025through Mar 11, 2026 |
| Public Notice | IN5235004 | Unaddressed | Jan 1, 2025 |
| Lead and Copper Rule | IN5235004 | Resolved | Jan 1, 2025through Feb 19, 2026 |
| Groundwater RuleHealth-based | IN5235014 | Resolved | Nov 14, 2024through Apr 10, 2025 |
| Groundwater Rule | IN5235004 | Unaddressed | Oct 29, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | IN5235004 | Resolved | Oct 17, 2024through Dec 2, 2024 |
| LEAD AND COPPER RULE REVISIONS | IN5235004 | Resolved | Oct 17, 2024through Dec 2, 2024 |
| Consumer Confidence Rule | IN5235014 | Resolved | Jul 1, 2024through Sep 16, 2024 |
| Groundwater RuleHealth-based | IN5235014 | Resolved | Mar 29, 2024through Mar 27, 2026 |
| 1,2,4-Trichlorobenzene | IN5235004 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Vinyl chloride | IN5235004 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| 1,1-Dichloroethylene | IN5235004 | Resolved | Jan 1, 2024through Dec 31, 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
Your personalized water action plan
Matched to Huntington ZIP 46750 using 337 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
337 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
TTHM, 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.
Frequently asked
Water questions for Huntington
Is tap water safe in Huntington?+
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 337 PPM, or 19.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 337 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.