We read 9 results from Sno PUD 1 - Lake Stevens’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 60,064 people · Water system ID WA5380907 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
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 |
|---|---|---|---|---|
| Arsenichighest measured · range 1.7 to 1.8 · Lake Stevens treatment plant · 2025 report, page 5 | 1.8 ppb | 0.004 ppb | 10 ppb | Above the health goal450x the health goal |
| Copper90th percentile of 37 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 5 | 0.4 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.3x the health goal |
| Lead90th percentile of 37 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 5 | 3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal15x the health goal |
| Chlorineaverage · range 0.2 to 1.28 · Distribution system · 2025 report, page 5 | 0.87 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)highest running annual average · range 6 to 50 · Distribution system · 2025 report, page 5 | 39 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 13 to 55 · Distribution system · 2025 report, page 5 | 50 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range ND to 0.86 · Distribution system · 2025 report, page 5 | 0.58 ppm | 1 ppm | 4 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · City of Everett supply · 2025 report, page 5 | 0.04 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumaverage · range 8 to 30 · Distribution system · 2025 report, page 5 | 19 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.
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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
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