Hardness
Very Hard
236 PPM · 13.8 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
236 PPM · 13.8 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0069 mg/L
46% of action level
Utility match
2 systems
Serves 1,960 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
236 PPM
Parts per million
236
mg/L as CaCO₃ equivalent
Grains per gallon
13.8
1 GPG ≈ 17.1 PPM
What this means at home
At 236 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
27.2 mi
Observation range
Jan 11, 2016–May 12, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: South Grand River at Archie, 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.
Pleasanton median
236 PPM
About the same1 indexed ZIP readings · Range 236–236 PPM
Kansas median
289 PPM
53 PPM lower540 indexed ZIP readings · Range 72.2–707 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)
0.0069 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 0.0069
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | KS2010704 | Resolved | Jan 1, 2026through Mar 5, 2026 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | KS2010704 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Total Haloacetic Acids (HAA5) | KS2010704 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| CARBON, TOTALHealth-based | KS2010704 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Total Haloacetic Acids (HAA5) | KS2010704 | Resolved | Jun 1, 2022through Aug 31, 2022 |
| TTHM | KS2010704 | Resolved | Jun 1, 2022through Aug 31, 2022 |
| CARBON, TOTAL | KS2010704 | Resolved | Apr 1, 2022through May 1, 2022 |
| TTHM | KS2010704 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| Total Haloacetic Acids (HAA5) | KS2010704 | Resolved | Dec 1, 2021through Feb 28, 2022 |
| Total Haloacetic Acids (HAA5) | KS2010704 | Resolved | Jun 1, 2021through Aug 31, 2021 |
| TTHM | KS2010704 | Resolved | Jun 1, 2021through Aug 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 Pleasanton ZIP 66075 using 236 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
236 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 236 PPM, or 13.8 grains per gallon, classified as very hard. This is not a household tap measurement.
At 236 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.