We read 5 results from De Pere Waterworks Sa 1’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Water system ID WI4050453 · 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 · sampled 2023 · Service area 1 customer taps · 2025 report, page 7 | 0.66 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal3.3x the health goal |
| PFOA (a PFAS)highest measured · range ND to 0.52 · sampled 2023 · Entry point · 2025 report, page 9 | 0.52 ppt | 0.007 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal74x the health goal |
| Copper90th percentile of 30 homes tested, 0 over the action level · listed as a violation in the report · sampled 2023 · Service area 1 customer taps · 2025 report, page 7 | 0.25 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 14 to 38 · listed as a violation in the report · Service area 1 site B-32 · 2025 report, page 6 | 27 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 42.5 to 60.8 · listed as a violation in the report · Service area 1 site B-32 · 2025 report, page 6 | 56.1 ppb | None set | 80 ppb | Below the legal 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)
What removes it: Reverse osmosis.
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