Hardness
Very Hard
322 PPM · 18.8 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 Pierce County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
322 PPM · 18.8 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
3 systems
Serves 16,000 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
322 PPM
Parts per million
322
mg/L as CaCO₃ equivalent
Grains per gallon
18.8
1 GPG ≈ 17.1 PPM
What this means at home
At 322 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
81
Nearest site
4.5 mi
Observation range
Jul 11, 2016–Aug 30, 2018
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: PDCT-U1 027N19W08D 01 (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.
River Falls median
322 PPM
About the same1 indexed ZIP readings · Range 322–322 PPM
Wisconsin median
288 PPM
34 PPM higher556 indexed ZIP readings · Range 41.3–467 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 Sep 30, 2024
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
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONSHealth-based | WI6480246 | Resolved | Oct 17, 2024through Jul 16, 2025 |
| Public Notice | WI6480246 | Unaddressed | Oct 17, 2024 |
| Revised Total Coliform Rule | WI6560140 | Resolved | Dec 1, 2021through Dec 31, 2021 |
| Revised Total Coliform RuleHealth-based | WI6560140 | Resolved | Mar 1, 2021through Mar 31, 2021 |
| Lead and Copper Rule | WI6560143 | Resolved | Jan 1, 2021through Jan 19, 2021 |
| Public Notice | WI6560143 | Unaddressed | Oct 1, 2011 |
| Public Notice | WI6560143 | Unaddressed | Oct 1, 2011 |
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 River Falls ZIP 54022 using 322 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
322 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 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 322 PPM, or 18.8 grains per gallon, classified as very hard. This is not a household tap measurement.
At 322 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.