Hardness
Very Hard
182 PPM · 10.6 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 Linn County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
182 PPM · 10.6 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0026 mg/L
17% of action level
Utility match
1 system
Serves 408 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
182 PPM
Parts per million
182
mg/L as CaCO₃ equivalent
Grains per gallon
10.6
1 GPG ≈ 17.1 PPM
What this means at home
At 182 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
17
Nearest site
19.2 mi
Observation range
Jan 11, 2016–May 13, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Locust Creek near Linneus, 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.
Bucklin median
182 PPM
About the same1 indexed ZIP readings · Range 182–182 PPM
Missouri median
236 PPM
54 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)
0.0026 mg/L
Reported Dec 31, 2024
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 0.0026
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | MO2010112 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| LEAD AND COPPER RULE REVISIONS | MO2010112 | Unaddressed | Jul 2, 2025 |
| Lead and Copper Rule | MO2010112 | Resolved | Oct 1, 2024through Jan 30, 2026 |
| Consumer Confidence Rule | MO2010112 | Resolved | Jul 1, 2024through Dec 9, 2024 |
| Consumer Confidence Rule | MO2010112 | Resolved | Jul 1, 2023through Nov 20, 2023 |
| Consumer Confidence Rule | MO2010112 | Resolved | Jul 1, 2021through Dec 6, 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 Bucklin ZIP 64631 using 182 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
182 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 182 PPM, or 10.6 grains per gallon, classified as very hard. This is not a household tap measurement.
At 182 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.