We read 15 results from Brookfield Water Utility’s 2024 water quality report. No results over a legal limit; 6 above a health goal or guideline.
Serves about 29,070 people · Water system ID WI2680253 · Read the district’s 2024 report (opens in a new tab)
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Results from the 2024 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 |
|---|---|---|---|---|
| Arsenichighest measured · range ND to 3 · listed as a violation in the report · sampled 2023 · Wells · 2024 report, page 4 | 3 ppb | 0.004 ppb | 10 ppb | Above the health goal750x the health goal |
| Copper90th percentile of 30 homes tested, 1 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2024 report, page 4 | 0.78 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal2.6x the health goal |
| Lead90th percentile of 30 homes tested, 0 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2024 report, page 4 | 1.5 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal7.5x the health goal |
| PFOA (a PFAS)highest measured · range 1.8 to 3.1 · sampled 2025 · Wells · 2024 report, page 3 | 3.1 ppt | 0.007 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal443x the health goal |
| PFOS (a PFAS)highest measured · range 2.1 to 2.5 · sampled 2025 · Wells · 2024 report, page 3 | 2.5 ppt | 1 ppt | 70 ppt (Wisconsin) now; 4 ppt from 2029 | Above the health goal2.5x the health goal |
| Uraniumhighest measured · range 0.3 to 3.3 · listed as a violation in the report · sampled 2025 · Wells · 2024 report, page 2 | 1.1 ppb | 0.6 ppb | 30 ppb | Above the health goal1.8x the health goal |
| Bariumhighest measured · range 0.01 to 0.17 · listed as a violation in the report · sampled 2023 · Wells · 2024 report, page 4 | 0.17 ppm | 2 ppm | 2 ppm | Below the health goal |
| Disinfection byproducts (HAA5)as reported · listed as a violation in the report · sampled 2025 · Distribution system (D-1) · 2024 report, page 2 | 9 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · listed as a violation in the report · sampled 2025 · Distribution system (D-1) · 2024 report, page 2 | 42.4 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.2 to 0.7 · listed as a violation in the report · sampled 2023 · Wells · 2024 report, page 4 | 0.7 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range ND to 0.65 · listed as a violation in the report · sampled 2025 · Wells · 2024 report, page 4 | 0.65 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)highest measured · range 2 to 2.6 · sampled 2025 · Wells · 2024 report, page 3 | 2.6 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| Lithiumhighest measured · range 9 to 14 · Wells (UCMR 5) · 2024 report, page 3 | 14 ppb | None set | None | No health limit |
| PFBS (a PFAS)highest measured · range 3.6 to 5.1 · sampled 2025 · Wells · 2024 report, page 3 | 5.1 ppt | None set | None | No health limit |
| Sodiumhighest measured · range 13 to 130 · listed as a violation in the report · sampled 2023 · Wells · 2024 report, page 4 | 130 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. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Brookfield Water Utility’s water between Jan 2023 and Jul 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFHxS3.2 pptFound in 2 of 34 samples · highest resultNo federal limit in force for this one
- PFBS4.7 pptFound in 4 of 34 samples · highest resultNo federal limit in force for this one
- Lithium14 ppbFound in 20 of 34 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
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: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS)
What removes it: Reverse osmosis.
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