We read 10 results from Spanaway Water Company’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 31,908 people · Water system ID WA5382850 · 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 |
|---|---|---|---|---|
| Lead90th percentile of homes tested · printed as .0024 ppm · Customer taps · 2025 report, page 7 | 2.4 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal12x the health goal |
| PFOA (a PFAS)highest measured · range ND to 6.2 · Wells · 2025 report, page 7 | 6.2 ppt | 0.007 ppt | 4 ppt from 2029 | Above the federal limit that takes effect in 20291.6x the 4 ppt federal limit that takes effect in 2029Not a violation yet: EPA's 4 ppt limit is final, but water systems don't have to meet it until 2029. |
| PFOS (a PFAS)highest measured · range ND to 10 · Wells · 2025 report, page 7 | 10 ppt | 1 ppt | 4 ppt from 2029 | Above the federal limit that takes effect in 20292.5x the 4 ppt federal limit that takes effect in 2029Not a violation yet: EPA's 4 ppt limit is final, but water systems don't have to meet it until 2029. |
| Radium (combined 226 + 228)highest measured · range ND to 0.99 · Wells · 2025 report, page 7 | 0.99 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Chlorinehighest measured · range 0.43 to 1.29 · Distribution system · 2025 report, page 7 | 1.29 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested · Customer taps · 2025 report, page 7 | 0.22 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest measured · range 1.97 to 2.5 · Distribution system · 2025 report, page 7 | 2.5 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range ND to 0.3 · sampled 2019 · Wells · 2025 report, page 7 | 0.3 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range ND to 4.97 · Wells · 2025 report, page 7 | 4.97 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)highest measured · range ND to 5.6 · Wells · 2025 report, page 7 | 5.6 ppt | None set | 10 ppt from 2029 | Below the legal 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 Spanaway Water Company’s water between Aug 2024 and Feb 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA6.2 pptFound in 1 of 20 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFOS8.3 pptFound in 5 of 20 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFHxS3.7 pptFound in 2 of 20 samples · highest resultNo federal limit in force for this one
- PFBS7.5 pptFound in 7 of 20 samples · highest resultNo federal limit in force for this one
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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS), PFOA (EPA testing), PFOS (EPA testing)
What removes it: Reverse osmosis.
Radium and uranium
Found: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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