We read 17 results from California Water Service Co.-Travis Afb’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 18,111 people · Water system ID CA4810701 · 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 |
|---|---|---|---|---|
| Chloridesingle sample · City of Vallejo Water (supplier) · 2025 report, page 14 | 15 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.23 to 2.4 · 2025 report, page 13 | 1.3 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 13 | Not detected | 0.3 ppm | 1.3 ppm (action level) | Not detected |
| Disinfection byproducts (HAA5)highest running annual average · range 15 to 57 · 2025 report, page 13 | 39 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 22 to 91 · 2025 report, page 13 | 77 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.71 to 0.85 · 2025 report, page 13 | 0.79 ppm | 1 ppm | 2 ppm | Below the health goal |
| pHaverage · range 6.9 to 8.9 · 2025 report, page 15 | 7.8 | — | — | Normal range |
| Sulfatesingle sample · City of Vallejo Water (supplier) · 2025 report, page 14 | 30 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidssingle sample · City of Vallejo Water (supplier) · 2025 report, page 14 | 170 ppm | — | 500 ppm guideline | Within the guideline |
| Alkalinitysingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 83 ppm | None set | None | No health limit |
| Boronsingle sample · printed as 100 ppb · City of Vallejo Water (supplier) · 2025 report, page 14 | 0.1 ppm | None set | None | No health limit |
| Calciumsingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 14 ppm | None set | None | No health limit |
| Conductivitysingle sample · City of Vallejo Water (supplier) · 2025 report, page 14 | 270 µS/cm | None set | None | No health limit |
| Hardnesssingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 4.68 gpg (80 ppm) | — | — | Moderately hard |
| Magnesiumsingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 11 ppm | None set | None | No health limit |
| Potassiumsingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 1.6 ppm | None set | None | No health limit |
| Sodiumsingle sample · City of Vallejo Water (supplier) · 2025 report, page 15 | 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. 1 number we weren’t sure about is held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in California Water Service Co.-Travis Afb’s water between Mar 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium9.9 ppbFound in 1 of 4 samples · highest resultBelow EPA’s health reference level of 10 ppb
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 in this report is above a health goal or legal limit. If you’re bothered by taste, smell, hardness or spots, or your home has older pipes, the filter catalog and buyer questions can help you pick, and a test of your own tap shows what your plumbing adds.
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