Hardness
Very Hard
230 PPM · 13.5 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 Vernon County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
230 PPM · 13.5 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0076 mg/L
51% of action level
Utility match
1 system
Serves 330 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
230 PPM
Parts per million
230
mg/L as CaCO₃ equivalent
Grains per gallon
13.5
1 GPG ≈ 17.1 PPM
What this means at home
At 230 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
21
Nearest site
22.8 mi
Observation range
Jan 11, 2016–May 12, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Osage River above Schell City, MO (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.
Hume median
230 PPM
About the same1 indexed ZIP readings · Range 230–230 PPM
Missouri median
236 PPM
6 PPM lower556 indexed ZIP readings · Range 38.3–483 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)
0.0076 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 0.0076
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | MO1010388 | Resolved | May 1, 2025through May 31, 2025 |
| Public Notice | MO1010388 | Resolved | May 12, 2024through Jun 21, 2024 |
| Public Notice | MO1010388 | Resolved | Mar 28, 2024through Jun 21, 2024 |
| TTHM | MO1010388 | Resolved | Jan 1, 2024through Mar 31, 2024 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Jan 1, 2024through Mar 31, 2024 |
| Revised Total Coliform Rule | MO1010388 | Resolved | Dec 1, 2023through Dec 31, 2023 |
| Public Notice | MO1010388 | Resolved | Nov 15, 2023through Jun 21, 2024 |
| TTHM | MO1010388 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Apr 1, 2023through Jun 30, 2023 |
| TTHM | MO1010388 | Resolved | Apr 1, 2023through Jun 30, 2023 |
| Revised Total Coliform Rule | MO1010388 | Resolved | Feb 1, 2023through Feb 28, 2023 |
| TTHM | MO1010388 | Resolved | Jan 1, 2023through Mar 31, 2023 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Jan 1, 2023through Mar 31, 2023 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Jul 1, 2022through Sep 30, 2022 |
| TTHM | MO1010388 | Resolved | Jul 1, 2022through Sep 30, 2022 |
| Revised Total Coliform Rule | MO1010388 | Resolved | Aug 1, 2021through Aug 31, 2021 |
| Public Notice | MO1010388 | Resolved | Jul 8, 2021through Jun 27, 2022 |
| Consumer Confidence Rule | MO1010388 | Resolved | Jul 1, 2021through Jun 27, 2022 |
| Total Haloacetic Acids (HAA5) | MO1010388 | Resolved | Apr 1, 2021through Jun 30, 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 Hume ZIP 64752 using 230 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
230 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 systemsAffiliate 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 230 PPM, or 13.5 grains per gallon, classified as very hard. This is not a household tap measurement.
At 230 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.