Hardness
Hard
170.5 PPM · 10 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 Marion County.
At a glance
EPA quarter 2026Q2
Hardness
Hard
170.5 PPM · 10 GPG
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0.0133 mg/L
89% of action level
Utility match
8 systems
Serves 30,586 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
170.5 PPM
Parts per million
170.5
mg/L as CaCO₃ equivalent
Grains per gallon
10
1 GPG ≈ 17.1 PPM
What this means at home
At 170.5 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
50
Nearest site
20.9 mi
Observation range
Jan 19, 2016–Sep 24, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Monongahela R L&D8 (Lower Pool) @ Point Marion, 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.
Fairmont median
171 PPM
About the same1 indexed ZIP readings · Range 170.5–170.5 PPM
West Virginia median
141 PPM
30 PPM higher219 indexed ZIP readings · Range 85.5–265 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)
0.0133 mg/L
Reported Dec 31, 2026
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 0.0133
EPA limit 0.015
Measured in UG/L
Local 62
EPA limit 0.06
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHM | WV3302510 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Consumer Confidence Rule | WV3302534 | Resolved | Oct 1, 2025through Feb 10, 2026 |
| Consumer Confidence Rule | WV3302510 | Unaddressed | Jul 1, 2025 |
| Consumer Confidence Rule | WV3302523 | Unaddressed | Oct 1, 2024 |
| Consumer Confidence Rule | WV3302510 | Unaddressed | Oct 1, 2024 |
| Consumer Confidence Rule | WV3302523 | Unaddressed | Jul 1, 2024 |
| Consumer Confidence Rule | WV3302510 | Unaddressed | Jul 1, 2024 |
| Consumer Confidence Rule | WV3302523 | Resolved | Oct 1, 2023through Sep 19, 2023 |
| Consumer Confidence Rule | WV3302523 | Resolved | Jul 1, 2023through Sep 13, 2023 |
| Public Notice | WV3302533 | Unaddressed | May 14, 2023 |
| Public Notice | WV3302533 | Unaddressed | May 14, 2023 |
| Public Notice | WV3302534 | Resolved | Nov 16, 2022through Mar 27, 2025 |
| Lead and Copper Rule | WV3302517 | Resolved | Oct 1, 2022through Jun 26, 2023 |
| Consumer Confidence Rule | WV3302534 | Resolved | Oct 1, 2022through Mar 27, 2025 |
| Public Notice | WV3302523 | Resolved | Sep 16, 2022through Aug 2, 2022 |
| Public Notice | WV3302523 | Resolved | Sep 16, 2022through Aug 2, 2022 |
| Public Notice | WV3302534 | Resolved | Aug 13, 2022through Mar 27, 2025 |
| Public Notice | WV3302534 | Resolved | Aug 13, 2022through Mar 27, 2025 |
| Consumer Confidence Rule | WV3302510 | Unaddressed | Jul 1, 2022 |
| TTHM | WV3302534 | Resolved | Apr 1, 2022through Jun 30, 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 Fairmont ZIP 26554 using 170.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
170.5 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 systemsDrinking water protection
Total Haloacetic Acids (HAA5) 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 reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 170.5 PPM, or 10 grains per gallon, classified as hard. This is not a household tap measurement.
At 170.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.