We read 12 results from Valley County Water Dist.’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 68,871 people · Water system ID CA1910009 · 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 |
|---|---|---|---|---|
| Chromium-6average · range 0.33 to 0.39 · listed as a violation in the report · sampled 2024 · Wells · 2025 report, page 10 | 0.37 ppb | 0.02 ppb | 10 ppb | Above the health goal19x the health goal |
| Arsenicaverage · range ND to 2.2 · listed as a violation in the report · Wells · 2025 report, page 10 | Not detected | 0.004 ppb | 10 ppb | Not detected |
| Bariumaverage · range ND to 0.13 · listed as a violation in the report · Wells · 2025 report, page 10 | Not detected | 2 ppm | 2 ppm | Not detected |
| Chlorinehighest running annual average · range 0.25 to 1 · listed as a violation in the report · Distribution system · 2025 report, page 11 | 0.72 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 36 homes tested, 0 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 10 | 0.18 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range ND to 2.8 · listed as a violation in the report · Distribution system · 2025 report, page 11 | 1.6 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 0.55 to 12 · listed as a violation in the report · Distribution system · 2025 report, page 11 | 11 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.21 to 0.29 · listed as a violation in the report · Wells · 2025 report, page 10 | 0.26 ppm | 1 ppm | 2 ppm | Below the health goal |
| Lead90th percentile of 36 homes tested, 0 over the action level · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 10 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)average · range 0.83 to 4.2 · listed as a violation in the report · Wells · 2025 report, page 10 | 1.3 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)average · range 0.1 to 0.55 · listed as a violation in the report · sampled 2024 · Wells · 2025 report, page 10 | 0.24 NTU | None set | 1 NTU | Below the legal limit |
| Uraniumaverage · range ND to 1.94 · listed as a violation in the report · printed as ND pCi/L · sampled 2023 · Wells · 2025 report, page 10 | Not detected | 0.6 ppb | 30 ppb | 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 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.
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