Hardness
Very Hard
300 PPM · 17.5 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 Harvey County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
300 PPM · 17.5 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
2 systems
Serves 2,165 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
300 PPM
Parts per million
300
mg/L as CaCO₃ equivalent
Grains per gallon
17.5
1 GPG ≈ 17.1 PPM
What this means at home
At 300 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
107
Nearest site
1.6 mi
Observation range
Mar 29, 2016–Aug 14, 2018
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 23S 02W 28CCDC01 IW-07A SHALLOW (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.
Halstead median
300 PPM
About the same1 indexed ZIP readings · Range 300–300 PPM
Kansas median
289 PPM
11 PPM higher540 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 mg/L
Reported Dec 31, 2024
Copper (CU90)
1.4 mg/L
Reported Dec 31, 2013
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 mg/L
Local 1.4
EPA limit 1.3
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | KS2107902 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Chlorine | KS2107902 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Revised Total Coliform Rule | KS2107902 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Chlorine | KS2107902 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Chlorine | KS2107902 | Archived | Dec 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Dec 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Chlorine | KS2107902 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Oct 1, 2025through Oct 31, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Sep 1, 2025through Sep 30, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Aug 1, 2025through Aug 31, 2025 |
| Chlorine | KS2107902 | Archived | Aug 1, 2025through Aug 31, 2025 |
| LEAD AND COPPER RULE REVISIONS | KS2007901 | Unaddressed | Jul 2, 2025 |
| Chlorine | KS2107902 | Archived | Jul 1, 2025through Jul 31, 2025 |
| Revised Total Coliform Rule | KS2107902 | Archived | Jul 1, 2025through Jul 31, 2025 |
| Lead and Copper Rule | KS2107902 | Unaddressed | Jan 1, 2025 |
| TTHM | KS2107902 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5) | KS2107902 | Archived | Jan 1, 2025through Dec 31, 2025 |
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 Halstead ZIP 67056 using 300 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
300 PPM is 3× 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
Copper (90th percentile) 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 300 PPM, or 17.5 grains per gallon, classified as very hard. This is not a household tap measurement.
At 300 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.