We read 9 results from City of California City’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 14,198 people · Water system ID CA1510032 · 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 |
|---|---|---|---|---|
| Arsenicas reported · range 6 to 9 · sampled 2023 · 2025 report, page 4 | 7 ppb | 0.004 ppb | 10 ppb | Above the health goal1,750x the health goal |
| Fluorideas reported · range 1.29 to 1.57 · sampled 2023 · 2025 report, page 4 | 1.4 ppm | 1 ppm | 2 ppm | Above the health goal1.4x the health goal |
| Chlorideas reported · range 71 to 80 · sampled 2023 · 2025 report, page 5 | 75.8 ppm | — | 250 ppm guideline | Within the guideline |
| Disinfection byproducts (HAA5)as reported · range ND to 2.7 · 2025 report, page 4 | 2.7 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)as reported · range ND to 1.6 · 2025 report, page 4 | 0.4 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)as reported · range 0.28 to 1.26 · 2025 report, page 4 | 0.56 ppm | 10 ppm | 10 ppm | Below the health goal |
| Seleniumas reported · range ND to 12 · sampled 2023 · 2025 report, page 4 | 5.8 ppb | 30 ppb | 50 ppb | Below the health goal |
| Sulfateas reported · range 88 to 94 · sampled 2023 · 2025 report, page 5 | 91.5 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsas reported · range 409 to 448 · sampled 2023 · 2025 report, page 5 | 429 ppm | — | 500 ppm guideline | Within the guideline |
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 California City’s water between Dec 2023 and Sep 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium49.7 ppbFound in 12 of 12 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
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