Hardness
Hard
152.5 PPM · 8.9 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 Montgomery County.
At a glance
EPA quarter 2026Q2
Hardness
Hard
152.5 PPM · 8.9 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
7.0e-4 mg/L
5% of action level
Utility match
2 systems
Serves 428 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
152.5 PPM
Parts per million
152.5
mg/L as CaCO₃ equivalent
Grains per gallon
8.9
1 GPG ≈ 17.1 PPM
What this means at home
At 152.5 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
6
Nearest site
61.5 mi
Observation range
Jan 26, 2016–Apr 20, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Center Creek near Smithfield, 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.
Dearing median
153 PPM
About the same1 indexed ZIP readings · Range 152.5–152.5 PPM
Kansas median
289 PPM
136 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)
7.0e-4 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 7.0e-4
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | KS2012511 | Unaddressed | Jan 1, 2026 |
| Lead and Copper Rule | KS2012516 | Unaddressed | Oct 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | KS2012511 | Unaddressed | Jul 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | KS2012516 | Resolved | Oct 17, 2024through Oct 29, 2024 |
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 Dearing ZIP 67340 using 152.5 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
152.5 PPM is 1× 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 152.5 PPM, or 8.9 grains per gallon, classified as hard. This is not a household tap measurement.
At 152.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.