We read 19 results from Farmington’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 23,534 people · Water system ID MN1190008 · 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 |
|---|---|---|---|---|
| Copper90th percentile of 60 homes tested, 0 over the action level · sampled 2026 · Customer taps · 2025 report, page 3 | 0.83 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal2.8x the health goal |
| PFOA (a PFAS)as reported · range 0.51 to 0.61 · sampled 2023 · Wells · 2025 report, page 6 | 0.55 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal79x the health goal |
| Uraniumas reported · range ND to 1.5 · Wells · 2025 report, page 4 | 1.5 ppb | 0.6 ppb | 30 ppb | Above the health goal2.5x the health goal |
| Bariumas reported · range 0.09 to 0.14 · Wells · 2025 report, page 4 | 0.14 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineas reported · range 0.16 to 0.44 · Distribution system · 2025 report, page 5 | 0.32 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)as reported · range 1.1 to 1.5 · Distribution system · 2025 report, page 5 | 1.5 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · range 8.7 to 12.2 · Distribution system · 2025 report, page 5 | 12.2 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideas reported · range 0.7 to 0.99 · Wells · 2025 report, page 5 | 0.87 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of 60 homes tested, 0 over the action level · Customer taps · 2025 report, page 3 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)as reported · range ND to 0.74 · Wells · 2025 report, page 4 | 0.74 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)as reported · range ND to 0.4 · sampled 2023 · Wells · 2025 report, page 8 | 0.25 ppt | None set | 10 ppt from 2029 | Below the legal limit |
| PFOS (a PFAS)as reported · range ND to 0.41 · sampled 2023 · Wells · 2025 report, page 5 | 0.14 ppt | 1 ppt | 4 ppt from 2029 | Below the health goal |
| Sulfateas reported · range 13.6 to 23.9 · Wells · 2025 report, page 8 | 23.9 ppm | — | 250 ppm guideline | Within the guideline |
| PFBA (a PFAS)as reported · range 1.2 to 37 · Wells · 2025 report, page 8 | 33 ppt | None set | None | No health limit |
| PFBS (a PFAS)as reported · range ND to 1 · Wells · 2025 report, page 8 | 0.93 ppt | None set | None | No health limit |
| PFHpA (a PFAS)as reported · range ND to 1.6 · Wells · 2025 report, page 8 | 0.8 ppt | None set | None | No health limit |
| PFHxA (a PFAS)as reported · range ND to 0.44 · sampled 2023 · Wells · 2025 report, page 8 | 0.28 ppt | None set | None | No health limit |
| PFPeA (a PFAS)as reported · range ND to 0.95 · Wells · 2025 report, page 8 | 0.82 ppt | None set | None | No health limit |
| Sodiumas reported · range 2.96 to 3.25 · Wells · 2025 report, page 8 | 3.25 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. 4 numbers we weren’t sure about are 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.
Copper
Found: Copper
What removes it: Reverse osmosis.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
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