We read 16 results from Dublin’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 17,500 people · Water system ID GA1750002 · 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 |
|---|---|---|---|---|
| PFOA (a PFAS)highest measured · range 0.82 to 1.5 · 2025 report, page 9 | 1.5 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal214x the health goal |
| PFOS (a PFAS)highest measured · range 0.83 to 1.4 · 2025 report, page 9 | 1.4 ppt | 1 ppt | 4 ppt from 2029 | Above the health goal1.4x the health goal |
| Chlorineaverage · range 0.2 to 2.2 · 2025 report, page 7 | 1.48 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested · printed as 200 ppb · 2025 report, page 8 | 0.2 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 35.6 to 59.2 · Site #1 · 2025 report, page 7 | 59.2 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 42.9 to 64.7 · Site #1 · 2025 report, page 7 | 64.7 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.51 to 0.89 · 2025 report, page 7 | 0.74 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range ND to 0.4 · 2025 report, page 7 | 0.4 ppm | 10 ppm | 10 ppm | Below the health goal |
| Bromodichloromethaneas reported · 2025 report, page 7 | 6.5 ppb | None set | None | No health limit |
| Chloroformas reported · 2025 report, page 7 | 15 ppb | None set | None | No health limit |
| Dibromochloromethaneas reported · 2025 report, page 7 | 1.3 ppb | None set | None | No health limit |
| PFBA (a PFAS)highest measured · range 1.6 to 1.9 · printed as 0.0019 ug/L · 2025 report, page 9 | 1.9 ppt | None set | None | No health limit |
| PFBS (a PFAS)highest measured · range 0.81 to 1.1 · 2025 report, page 9 | 1.1 ppt | None set | None | No health limit |
| PFHxA (a PFAS)highest measured · range 0.9 to 1.1 · printed as 0.0011 ug/L · 2025 report, page 9 | 1.1 ppt | None set | None | No health limit |
| Sodiumas reported · 2025 report, page 7 | 6.3 ppm | None set | None | No health limit |
| Total organic carbonaverage · range 1.74 to 2.52 · 2025 report, page 7 | 2.06 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.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS)
What removes it: Reverse osmosis.
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