Hardness
Very Hard
483 PPM · 28.2 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 Caldwell County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
483 PPM · 28.2 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
1 system
Serves 878 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
483 PPM
Parts per million
483
mg/L as CaCO₃ equivalent
Grains per gallon
28.2
1 GPG ≈ 17.1 PPM
What this means at home
At 483 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
69
Nearest site
34.9 mi
Observation range
Jul 27, 2016–May 12, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: T61N R27W 29BAA 16271 (Well).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.
Braymer median
483 PPM
About the same1 indexed ZIP readings · Range 483–483 PPM
Missouri median
236 PPM
247 PPM higher556 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 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 0
EPA limit 0.015
Measured in UG/L
Local 87
EPA limit 0.08
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Groundwater Rule | MO1010098 | Resolved | Jan 1, 2026through Jan 31, 2026 |
| LEAD AND COPPER RULE REVISIONS | MO1010098 | Unaddressed | Jul 2, 2025 |
| Groundwater Rule | MO1010098 | Resolved | Nov 1, 2024through Nov 30, 2024 |
| Groundwater Rule | MO1010098 | Resolved | Sep 1, 2024through Sep 30, 2024 |
| Consumer Confidence Rule | MO1010098 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Groundwater Rule | MO1010098 | Resolved | Apr 1, 2024through Apr 30, 2024 |
| Total Haloacetic Acids (HAA5) | MO1010098 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| TTHM | MO1010098 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Groundwater Rule | MO1010098 | Resolved | Dec 1, 2023through Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | MO1010098 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| TTHM | MO1010098 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Revised Total Coliform Rule | MO1010098 | Resolved | Sep 1, 2023through Sep 30, 2023 |
| Groundwater RuleHealth-based | MO1010098 | Resolved | Feb 1, 2023through Feb 28, 2023 |
| Groundwater RuleHealth-based | MO1010098 | Resolved | Jan 1, 2023through Jan 31, 2023 |
| Groundwater Rule | MO1010098 | Resolved | Nov 1, 2022through Nov 30, 2022 |
| TTHM | MO1010098 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Total Haloacetic Acids (HAA5) | MO1010098 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| TTHMHealth-basedReported 87 UG/L · MCL 0.08 | MO1010098 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| TTHMHealth-basedReported 87 UG/L · MCL 0.08 | MO1010098 | Resolved | Jul 1, 2022through Sep 30, 2022 |
| Total Haloacetic Acids (HAA5) | MO1010098 | Resolved | Oct 1, 2021through Dec 31, 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 Braymer ZIP 64624 using 483 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
483 PPM is 4× 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 483 PPM, or 28.2 grains per gallon, classified as very hard. This is not a household tap measurement.
At 483 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.