We read 15 results from Franklin Water Utility’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 22,500 people · Water system ID WI2410563 · 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 3 | 3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal15x the health goal |
| PFOA (a PFAS)as reported · range 1 to 1.5 · sampled 2023 · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 4 | 1.5 ppt | 0.007 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal214x the health goal |
| Radium (combined 226 + 228)as reported · sampled 2020 · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.9 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumas reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.02 ppm | 2 ppm | 2 ppm | Below the health goal |
| Copper90th percentile of 30 homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 3 | 0.09 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)average · range 10 to 28 · Site FWU-0009, highest of 4 sources · 2025 report, page 3 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 38.5 to 74.5 · Site FWU-0009, highest of 4 sources · 2025 report, page 3 | 54.9 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideas reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.8 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)as reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.41 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFOS (a PFAS)as reported · range ND to 0.35 · sampled 2023 · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 4 | 0.35 ppt | 1 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Below the health goal |
| Seleniumas reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 2 ppb | 30 ppb | 50 ppb | Below the health goal |
| Turbidity (cloudiness)average · range 0.03 to 0.12 · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.04 NTU | None set | 1 NTU | Below the legal limit |
| Nickelas reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 0.85 ppb | None set | None | No health limit |
| PFAS (total of measured)as reported · range 1 to 1.85 · sampled 2023 · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 4 | 1.85 ppt | None set | None | No health limit |
| Sodiumas reported · Treated water (Oak Creek, Lake Michigan) · 2025 report, page 3 | 14 ppm | 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)
What removes it: Reverse osmosis.
Radium and uranium
Found: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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