We read 18 results from City of Benicia’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 27,131 people · Water system ID CA4810001 · 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 37 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 2.33 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal12x the health goal |
| Chlorideaverage · Treated water · 2025 report, page 5 | 18 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.62 to 1.59 · Distribution system · 2025 report, page 5 | 1.12 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 37 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 0.07 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)as reported · range 14 to 18 · Distribution system · 2025 report, page 5 | 16 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · range 67 to 76 · Distribution system · 2025 report, page 5 | 70 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · Treated water · 2025 report, page 5 | 0.7 ppm | 1 ppm | 2 ppm | Below the health goal |
| pHaverage · range 7.42 to 8.66 · Treated water · 2025 report, page 5 | 8.14 | — | — | Normal range |
| Sulfateaverage · Treated water · 2025 report, page 5 | 48 ppm | — | 250 ppm guideline | Within the guideline |
| Turbidity (cloudiness)average · range 0.03 to 0.19 · Water plant · 2025 report, page 5 | 0.07 NTU | None set | 1 NTU | Below the legal limit |
| Calciumaverage · Treated water · 2025 report, page 5 | 15 ppm | None set | None | No health limit |
| Hardnessaverage · Treated water · 2025 report, page 5 | 5.09 gpg (87 ppm) | — | — | Moderately hard |
| Magnesiumaverage · Treated water · 2025 report, page 5 | 12 ppm | None set | None | No health limit |
| PFBA (a PFAS)as reported · printed as 0.0063 ppb · Treated water · 2025 report, page 5 | 6.3 ppt | None set | None | No health limit |
| PFBS (a PFAS)as reported · printed as 0.0033 ppb · Treated water · 2025 report, page 5 | 3.3 ppt | None set | None | No health limit |
| PFHxA (a PFAS)as reported · printed as 0.0034 ppb · Treated water · 2025 report, page 5 | 3.4 ppt | None set | None | No health limit |
| Potassiumaverage · Treated water · 2025 report, page 5 | 2 ppm | None set | None | No health limit |
| Sodiumaverage · Treated water · 2025 report, page 5 | 37 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in City of Benicia’s water between Jan 2025 and Oct 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFBS3.3 pptFound in 1 of 4 samples · highest resultNo federal limit in force for this one
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: Lead
What removes it: Certified carbon block or RO.
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