We read 6 results from Centralia Public Works - Water’s 2024 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 28,164 people · Water system ID WA5312200 · Read the district’s 2024 report (opens in a new tab)
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Results from the 2024 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 |
|---|---|---|---|---|
| PFOA (a PFAS)highest measured · range ND to 2.69 · Wells · 2024 report, page 3 | 2.69 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal384x the health goal |
| PFOS (a PFAS)highest measured · range ND to 5.48 · Port District Wells · 2024 report, page 3 | 5.48 ppt | 1 ppt | 4 ppt from 2029 | Above the federal limit that takes effect in 20291.4x 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-228highest measured · range 0.4 to 0.68 · listed as a violation in the report · sampled 2021 · Wells · 2024 report, page 3 | 0.68 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal36x the health goal |
| Disinfection byproducts (TTHM)highest measured · range 2.07 to 6.65 · Distribution system · 2024 report, page 3 | 6.65 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range 1.67 to 4.28 · Wells · 2024 report, page 3 | 4.28 ppm | 10 ppm | 10 ppm | Below the health goal |
| PFHxS (a PFAS)highest measured · range ND to 2.04 · Wells · 2024 report, page 3 | 2.04 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 Centralia Public Works - Water’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.
- PFOS5.8 pptFound in 4 of 6 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFBS4.2 pptFound in 3 of 6 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.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS), PFOS (EPA testing)
What removes it: Reverse osmosis.
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