Hardness
Very Hard
280 PPM · 16.4 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 Trempealeau County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
280 PPM · 16.4 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0318 mg/L
212% of action level
Utility match
1 system
Serves 120 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
280 PPM
Parts per million
280
mg/L as CaCO₃ equivalent
Grains per gallon
16.4
1 GPG ≈ 17.1 PPM
What this means at home
At 280 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
8
Nearest site
50.2 mi
Observation range
Aug 9, 2017–Sep 10, 2024
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: PDCT-U7 024N16W09AA 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.
Dodge median
280 PPM
About the same1 indexed ZIP readings · Range 280–280 PPM
Wisconsin median
288 PPM
8 PPM lower556 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)
0.0318 mg/L
Reported Sep 30, 2023
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 0.0318
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Di(2-ethylhexyl) phthalate | WI6620165 | Resolved | Oct 1, 2025through Dec 31, 2025 |
| Public Notice | WI6620165 | Resolved | Dec 11, 2024through Jul 10, 2025 |
| Lead and Copper RuleHealth-based | WI6620165 | Resolved | Dec 11, 2024through Feb 18, 2025 |
| Public Notice | WI6620165 | Resolved | Dec 11, 2023through Mar 25, 2024 |
| Lead and Copper RuleHealth-based | WI6620165 | Resolved | Oct 1, 2023through Feb 18, 2025 |
| Lead and Copper Rule | WI6620165 | Resolved | Jun 1, 2023through Nov 30, 2023 |
| Lead and Copper Rule | WI6620165 | Resolved | Jun 1, 2023through Nov 30, 2023 |
| TTHM | WI6620165 | Resolved | Jan 1, 2023through Sep 30, 2024 |
| Total Haloacetic Acids (HAA5) | WI6620165 | Resolved | Jan 1, 2023through Sep 30, 2024 |
| Public Notice | WI6620165 | Resolved | Oct 2, 2021through Dec 15, 2021 |
| Groundwater RuleHealth-based | WI6620165 | Resolved | Oct 2, 2021through Dec 18, 2023 |
| Lead and Copper Rule | WI6620165 | Resolved | Feb 1, 2021through Feb 1, 2021 |
| Lead and Copper Rule | WI6620165 | Unaddressed | Jan 1, 2012 |
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 Dodge ZIP 54625 using 280 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
280 PPM is 2× 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
Lead (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 280 PPM, or 16.4 grains per gallon, classified as very hard. This is not a household tap measurement.
At 280 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.