We read 14 results from Manitowoc Waterworks’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 34,500 people · Water system ID WI4360364 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Lead90th percentile of 30 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 2 | 7.7 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal39x the health goal |
| PFOA (a PFAS)highest measured · range 0.95 to 2.3 · sampled 2023 · Treated water · 2025 report, page 2 | 2.3 ppt | 0.007 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal329x the health goal |
| PFOS (a PFAS)highest measured · range 0.43 to 1.2 · sampled 2023 · Treated water · 2025 report, page 2 | 1.2 ppt | 1 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal1.2x the health goal |
| Radium (combined 226 + 228)single sample · listed as a violation in the report · sampled 2023 · Treated water · 2025 report, page 2 | 0.9 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Uraniumsingle sample · listed as a violation in the report · sampled 2023 · Treated water · 2025 report, page 2 | 1.5 ppb | 0.6 ppb | 30 ppb | Above the health goal2.5x the health goal |
| Atrazinehighest measured · range 0.03 to 0.03 · listed as a violation in the report · sampled 2023 · Treated water · 2025 report, page 2 | 0.03 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Bariumsingle sample · listed as a violation in the report · Treated water · 2025 report, page 2 | 0.02 ppm | 2 ppm | 2 ppm | Below the health goal |
| Copper90th percentile of 30 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 2 | 0.16 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · range 10 to 36 · listed as a violation in the report · Distribution system (D-18) · 2025 report, page 2 | 36 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range 26.6 to 58.2 · listed as a violation in the report · Distribution system (D-26) · 2025 report, page 2 | 58.2 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.73 to 0.88 · listed as a violation in the report · Treated water · 2025 report, page 2 | 0.88 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.31 to 1.5 · listed as a violation in the report · Treated water · 2025 report, page 2 | 1.5 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)highest measured · range 0.37 to 0.87 · sampled 2023 · Treated water · 2025 report, page 2 | 0.87 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| PFBS (a PFAS)highest measured · range 0.37 to 3.2 · sampled 2023 · Treated water · 2025 report, page 2 | 3.2 ppt | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS)
What removes it: Reverse osmosis.
Radium and uranium
Found: Radium (combined 226 + 228), Uranium
What removes it: Reverse osmosis.
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