We read 14 results from Defiance City’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 16,494 people · Water system ID OH2000111 · 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 |
|---|---|---|---|---|
| Fluorideaverage · range 0.86 to 1.23 · 2025 report, page 5 | 1.13 ppm | 1 ppm | 4 ppm | Above the health goal1.1x the health goal |
| PFOA (a PFAS)single sample · printed as 0.000865 ppb · 2025 report, page 3 | 0.87 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal124x the health goal |
| Atrazinehighest measured · range 0.07 to 0.07 · 2025 report, page 5 | 0.07 ppb | 0.15 ppb | 3 ppb | Below the health goal |
| Bariumhighest measured · range 0.03 to 0.03 · 2025 report, page 5 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · range 1.02 to 1.49 · 2025 report, page 5 | 1.22 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 30 homes tested, 0 over the action level · 2025 report, page 6 | 0.04 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 6 to 13.1 · 2025 report, page 6 | 9.4 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 25.5 to 75.5 · 2025 report, page 6 | 55 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range 0.57 to 2.06 · 2025 report, page 5 | 2.06 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFBA (a PFAS)single sample · printed as 0.0074 ppb · 2025 report, page 3 | 7.4 ppt | None set | None | No health limit |
| PFBS (a PFAS)single sample · printed as 0.00321 ppb · 2025 report, page 3 | 3.21 ppt | None set | None | No health limit |
| PFHxA (a PFAS)single sample · printed as 0.00443 ppb · 2025 report, page 3 | 4.43 ppt | None set | None | No health limit |
| PFPeA (a PFAS)single sample · printed as 0.00628 ppb · 2025 report, page 3 | 6.28 ppt | None set | None | No health limit |
| Total organic carbonaverage · range 1.3 to 2.5 · 2025 report, page 5 | 2.16 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. 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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
More districts: Ohio water quality · All states · Something look wrong? Tell us