We read 10 results from Washington State University’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 21,506 people · Water system ID WA5393200 · 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 |
|---|---|---|---|---|
| Ironhighest measured · range 0.3 to 1.54 · printed as 1540 ppb · Wells / distribution · 2025 report, page 5 | 1.54 ppm | — | 0.3 ppm guideline | Above the guideline5.1x the guideline (taste, odor or stains; not a health limit) |
| Lead90th percentile of 30 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 4.88 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal24x the health goal |
| Manganesehighest measured · range 0.06 to 0.13 · printed as 128 ppb · Wells / distribution · 2025 report, page 5 | 0.13 ppm | — | 0.05 ppm guideline | Above the guideline2.6x the guideline (taste, odor or stains; not a health limit) |
| Bariumas reported · printed as 88.6 ppb · Wells / distribution · 2025 report, page 4 | 0.09 ppm | 2 ppm | 2 ppm | Below the health goal |
| Copper90th percentile of 30 homes tested, 0 over the action level · printed as 127 ppb · sampled 2024 · Customer taps · 2025 report, page 4 | 0.13 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluorideas reported · printed as 452 ppb · Wells / distribution · 2025 report, page 4 | 0.45 ppm | 1 ppm | 4 ppm | Below the health goal |
| Zincas reported · printed as 13.6 ppb · Wells / distribution · 2025 report, page 5 | 0.01 ppm | — | 5 ppm guideline | Within the guideline |
| Conductivityas reported · Wells / distribution · 2025 report, page 5 | 377 µS/cm | None set | None | No health limit |
| Lithiumhighest measured · range 11.8 to 16.6 · sampled 2024 · Wells / distribution · 2025 report, page 6 | 16.6 ppb | None set | None | No health limit |
| Sodiumas reported · Wells / distribution · 2025 report, page 5 | 25.4 ppm | 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Washington State University’s water between Jun 2024 and Apr 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium16.6 ppbFound in 8 of 8 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.
Sediment or cloudy water
Found: Iron, Manganese
What removes it: Oxidation filter.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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