Hardness
Very Hard
329.5 PPM · 19.3 GPG
Local water dashboard
Official source aggregationWater quality in Waupun, WI 53963
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Fond Du Lac County.
2 reported benchmark flags
- Primary matched system
- Waupun Utilities
- Source water
- Groundwater
- County
- Fond Du Lac 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
8.7e-4 mg/L
6% of action level
Utility match
3 systems
Serves 8,056 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
329.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
329.5
mg/L as CaCO₃ equivalent
Grains per gallon
19.3
1 GPG ≈ 17.1 PPM
What this means at home
At 329.5 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
44
Nearest site
31.3 mi
Observation range
Aug 2, 2016–Sep 9, 2024
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: WS-18/13E/03-2169 (Well).USGS source documentation ↗
Regional context
Is 53963 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Waupun median
330 PPM
About the same1 indexed ZIP readings · Range 329.5–329.5 PPM
Wisconsin median
288 PPM
42 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 pass2 fail
Lead (PB90)
8.7e-4 mg/L
Reported Jun 30, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 8.7e-4
EPA limit 0.015
Gross Alpha, Excl. Radon and U
Measured in PCI/L
Local 39.6
EPA limit 15
Combined Radium (-226 and -228)
Measured in PCI/L
Local 11.45
EPA limit 5
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 14
- Health-based
- 5
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Gross Alpha, Excl. Radon and UHealth-basedReported 39.6 PCI/L · MCL 15 | WI1140156 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Combined Radium (-226 and -228)Health-basedReported 11.45 PCI/L · MCL 5 | WI1140156 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 16.2 PCI/L · MCL 15 | WI1140156 | Archived | Oct 1, 2025through Dec 31, 2025 |
| Radium-226 | WI1140156 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| Radium-228 | WI1140156 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| Combined Radium (-226 and -228)Health-basedReported 5.86 PCI/L · MCL 5 | WI1140156 | Archived | Apr 1, 2025through Jun 30, 2025 |
| Consumer Confidence Rule | WI1140142 | Resolved | Jul 1, 2024through Jul 17, 2024 |
| Consumer Confidence Rule | WI1140142 | Resolved | Jul 1, 2024through Jul 17, 2024 |
| Revised Total Coliform Rule | WI1140156 | Resolved | Jun 1, 2024through Jun 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 5.65 PCI/L · MCL 5 | WI1140142 | Archived | Apr 1, 2023through Jun 30, 2023 |
| Lead and Copper Rule | WI1140156 | Resolved | Jan 1, 2022through Feb 11, 2022 |
| Public Notice | WI1140156 | Unaddressed | Feb 1, 2017 |
| Public Notice | WI1140156 | Unaddressed | Jun 12, 2012 |
| Lead and Copper Rule | WI1140142 | 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
Your personalized water action plan
Matched to Waupun ZIP 53963 using 329.5 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
329.5 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
Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228) have 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 Waupun
Is tap water safe in Waupun?+
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 329.5 PPM, or 19.3 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 329.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.