Hardness
Moderately Hard
87.5 PPM · 5.1 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 Jefferson County.
At a glance
EPA quarter 2026Q2
Hardness
Moderately Hard
87.5 PPM · 5.1 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0021 mg/L
14% of action level
Utility match
1 system
Serves 6,220 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
87.5 PPM
Parts per million
87.5
mg/L as CaCO₃ equivalent
Grains per gallon
5.1
1 GPG ≈ 17.1 PPM
What this means at home
At 87.5 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
62
Nearest site
14.1 mi
Observation range
Jan 5, 2016–Sep 30, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Clarion River at Cooksburg, PA (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.
Brookville median
88 PPM
About the same1 indexed ZIP readings · Range 87.5–87.5 PPM
Pennsylvania median
84 PPM
About the same139 indexed ZIP readings · Range 43–166.5 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)
0.0021 mg/L
Reported Sep 30, 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 0.0021
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | PA6330004 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Groundwater Rule | PA6330004 | Resolved | Mar 1, 2022through Mar 31, 2022 |
| Surface Water Treatment Rule | PA6330004 | Resolved | Mar 1, 2022through Mar 31, 2022 |
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 Brookville ZIP 15825 using 87.5 PPM nearby hardness and 1 reported measurement benchmarks.
No urgent match
This profile does not trigger a treatment recommendation. Test at the tap before investing in equipment.
Affiliate 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 87.5 PPM, or 5.1 grains per gallon, classified as moderately hard. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.