We read 11 results from City of Wasco’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 22,757 people · Water system ID CA1510021 · 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 |
|---|---|---|---|---|
| Arsenicaverage · range ND to 7.2 · Wells · 2025 report, page 4 | 1.5 ppb | 0.004 ppb | 10 ppb | Above the health goal375x the health goal |
| Chromium-6average · range 2.6 to 3.8 · Wells · 2025 report, page 4 | 3.2 ppb | 0.02 ppb | 10 ppb | Above the health goal160x the health goal |
| Dibromochloropropane (DBCP)average · range ND to 0.01 · printed as 6.5 ppt · Wells · 2025 report, page 4 | 0.0065 ppb | 0 ppb | 0.2 ppb | Above the health goalThe health goal is zero |
| Chlorideaverage · range 11 to 15 · Wells · 2025 report, page 4 | 13 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.2 to 2.2 · Distribution system · 2025 report, page 4 | 0.9 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 54 homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 4 | 0.02 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)average · range 6 to 16 · Distribution system · 2025 report, page 4 | 8 ppb | None set | 80 ppb | Below the legal limit |
| Sulfateaverage · range 23 to 32 · Wells · 2025 report, page 4 | 28 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 170 to 200 · Wells · 2025 report, page 4 | 188 ppm | — | 500 ppm guideline | Within the guideline |
| Alkalinityaverage · range 59 to 78 · Wells · 2025 report, page 5 | 66 ppm | None set | None | No health limit |
| Conductivityaverage · range 150 to 490 · Wells · 2025 report, page 4 | 276 µS/cm | 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. 3 numbers we weren’t sure about are held back until a person checks.
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.
Industrial chemicals and pesticides
Found: Dibromochloropropane (DBCP)
What removes it: Carbon block or RO.
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