We read 5 results from Carpinteria Valley Water District’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 15,996 people · Water system ID CA4210001 · 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 |
|---|---|---|---|---|
| Chlorideas reported · range 21 to 160 · 2025 report, page 7 | 72 ppm | — | 250 ppm guideline | Within the guideline |
| Ironas reported · range ND to 0.06 · printed as 5 ppb · 2025 report, page 7 | 0.005 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganeseas reported · range ND to 0.1 · printed as 38 ppb · 2025 report, page 7 | 0.04 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)as reported · range ND to 6.1 · 2025 report, page 6 | 3.7 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfateas reported · range 127 to 336 · 2025 report, page 7 | 200 ppm | — | 250 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 Carpinteria Valley Water District’s water between May 2023 and Feb 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium37.3 ppbFound in 9 of 9 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 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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