We read 5 results from City of Livermore’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 38,892 people · Water system ID CA0110011 · 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 |
|---|---|---|---|---|
| Chloramineaverage · range 0.1 to 3.9 · listed as a violation in the report · Livermore distribution system · 2025 report, page 4 | 2.7 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 5 | Not detected | 0.3 ppm | 1.3 ppm (action level) | Not detected |
| Disinfection byproducts (HAA5)as reported · range 7.8 to 27.8 · listed as a violation in the report · Livermore distribution system · 2025 report, page 4 | 24 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · range 31 to 54 · listed as a violation in the report · Livermore distribution system · 2025 report, page 4 | 48 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 5 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
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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