Hardness
Very Hard
272.5 PPM · 15.9 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 Decatur County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
272.5 PPM · 15.9 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
9.5e-4 mg/L
6% of action level
Utility match
1 system
Serves 1,725 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
272.5 PPM
Parts per million
272.5
mg/L as CaCO₃ equivalent
Grains per gallon
15.9
1 GPG ≈ 17.1 PPM
What this means at home
At 272.5 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
4
Nearest site
41.6 mi
Observation range
Jan 5, 2016–May 28, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: SUGAR CREEK AT CO RD 400 S AT NEW PALESTINE, IN (Stream).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.
Westport median
273 PPM
About the same1 indexed ZIP readings · Range 272.5–272.5 PPM
Indiana median
313 PPM
40 PPM lower472 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)
9.5e-4 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.
Measured in mg/L
Local 9.5e-4
EPA limit 0.015
Measured in UG/L
Local 84.8
EPA limit 0.08
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based | IN5216005 | Resolved | Mar 5, 2026through Mar 26, 2026 |
| Di(2-ethylhexyl) adipate | IN5216005 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Simazine | IN5216005 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Di(2-ethylhexyl) phthalate | IN5216005 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| LASSO | IN5216005 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Atrazine | IN5216005 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| TTHMHealth-basedReported 84.8 UG/L · MCL 0.08 | IN5216005 | Archived | Jan 1, 2024through Mar 31, 2024 |
| Mercury | IN5216005 | Archived | Jan 1, 2024through Dec 31, 2024 |
| TTHMHealth-basedReported 82.5 UG/L · MCL 0.08 | IN5216005 | Archived | Oct 1, 2023through Dec 31, 2023 |
| Di(2-ethylhexyl) adipate | IN5216005 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| Di(2-ethylhexyl) phthalate | IN5216005 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| Atrazine | IN5216005 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| TTHMHealth-basedReported 83.4 UG/L · MCL 0.08 | IN5216005 | Archived | Jul 1, 2023through Sep 30, 2023 |
| LASSO | IN5216005 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| Simazine | IN5216005 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| TTHMHealth-basedReported 92.3 UG/L · MCL 0.08 | IN5216005 | Archived | Apr 1, 2023through Jun 30, 2023 |
| TTHMHealth-basedReported 90.4 UG/L · MCL 0.08 | IN5216005 | Archived | Jan 1, 2023through Mar 31, 2023 |
| Chromium | IN5216005 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| Fluoride | IN5216005 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| Mercury | IN5216005 | Resolved | Jan 1, 2023through Dec 31, 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 Westport ZIP 47283 using 272.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
272.5 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
TTHM 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 272.5 PPM, or 15.9 grains per gallon, classified as very hard. This is not a household tap measurement.
At 272.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.