We read 14 results from Grand Chute Tn San Dist 1’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 21,583 people · Water system ID WI4450429 · Read the district’s 2025 report (opens in a new tab)
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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 · sampled 2023 · Customer taps · 2025 report, page 4 | 3.1 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal16x the health goal |
| PFOA (a PFAS)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 1.4 ppt | 0.007 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal200x the health goal |
| Atrazineas reported · range ND to 0.1 · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 5 | 0.1 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Chlorideas reported · sampled 2022 · Purchased (Appleton Waterworks) · 2025 report, page 5 | 21 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of 30 homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 4 | 0.08 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 16 to 23 · Site B13, highest of 2 sources · 2025 report, page 3 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 23.3 to 40.2 · Site B9, highest of 2 sources · 2025 report, page 4 | 31.5 ppb | None set | 80 ppb | Below the legal limit |
| PFHxS (a PFAS)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 0.59 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| PFOS (a PFAS)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 1 ppt | 1 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Below the health goal |
| Sulfateas reported · Purchased (Appleton Waterworks) · 2025 report, page 5 | 33 ppm | — | 250 ppm guideline | Within the guideline |
| Uraniumas reported · sampled 2020 · Purchased (Appleton Waterworks) · 2025 report, page 5 | 0.4 ppb | 0.6 ppb | 30 ppb | Below the health goal |
| PFAS (total of measured)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 2.4 ppt | None set | None | No health limit |
| PFBS (a PFAS)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 0.82 ppt | None set | None | No health limit |
| PFHxA (a PFAS)as reported · sampled 2023 · Purchased (Appleton Waterworks) · 2025 report, page 4 | 0.5 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. 1 number we weren’t sure about is held back until a person checks.
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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