Hardness
Very Hard
333 PPM · 19.5 GPG
Local water dashboard
Official source aggregationWater quality in Menomonie, WI 54751
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Dunn County.
1 reported benchmark flag
- Primary matched system
- Menomonie Waterworks
- Source water
- Groundwater
- County
- Dunn County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0022 mg/L
15% of action level
Utility match
6 systems
Serves 15,950 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
333 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
333
mg/L as CaCO₃ equivalent
Grains per gallon
19.5
1 GPG ≈ 17.1 PPM
What this means at home
At 333 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
57
Nearest site
23.7 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-U5 029N16W18CC 01 (Well).USGS source documentation ↗
Regional context
Is 54751 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Menomonie median
333 PPM
About the same1 indexed ZIP readings · Range 333–333 PPM
Wisconsin median
288 PPM
45 PPM higher556 indexed ZIP readings · Range 41.3–467 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
1 pass1 fail
Lead (PB90)
0.0022 mg/L
Reported Sep 30, 2024
Copper (CU90)
1.8 mg/L
Reported Dec 31, 2004
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0022
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 1.8
EPA limit 1.3
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 14
- Health-based
- 0
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | WI6170276 | Resolved | Jul 2, 2025through Dec 20, 2025 |
| LEAD AND COPPER RULE REVISIONS | WI6170445 | Resolved | Jul 2, 2025through Jul 16, 2025 |
| Lead and Copper Rule | WI6170271 | Resolved | Jan 1, 2025through Jun 13, 2025 |
| Lead and Copper Rule | WI6170271 | Resolved | Jan 1, 2022through Jan 17, 2022 |
| Revised Total Coliform Rule | WI6170445 | Resolved | Aug 1, 2021through Aug 31, 2021 |
| Lead and Copper Rule | WI6170271 | Resolved | Jan 1, 2021through Jan 19, 2021 |
| Lead and Copper Rule | WI6170445 | Addressed | Jun 1, 2020 |
| Consumer Confidence Rule | WI6170445 | Addressed | Jul 1, 2019 |
| Consumer Confidence Rule | WI6170445 | Addressed | Jul 1, 2019 |
| Public Notice | WI6170445 | Addressed | Jul 1, 2019 |
| Consumer Confidence Rule | WI6170445 | Addressed | Jul 1, 2016 |
| Consumer Confidence Rule | WI6170445 | Addressed | Oct 1, 2015 |
| Consumer Confidence Rule | WI6170445 | Addressed | Jul 1, 2015 |
| Public Notice | WI6170276 | Unaddressed | Oct 1, 2009 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Menomonie ZIP 54751 using 333 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
333 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 systemsDrinking water protection
Under-Sink Reverse Osmosis System
Copper (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
Water questions for Menomonie
Is tap water safe in Menomonie?+
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.
How hard is the water?+
Nearby USGS observations produce an estimate of 333 PPM, or 19.5 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 333 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.