We read 5 results from Cole County Pwsd 1’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 12,493 people · Water system ID MO3024159 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range ND to 1.69 · sampled 2024 · 2025 report, page 2 | 1.69 ppb | 0.004 ppb | 10 ppb | Above the health goal423x the health goal |
| Fluoridehighest measured · range 0.21 to 2.92 · sampled 2024 · 2025 report, page 2 | 2.92 ppm | 1 ppm | 4 ppm | Above the 2 ppm secondary standard1.5x the 2 ppm secondary standard (EPA's level to prevent tooth discoloration, also used as health guidance); below the 4 ppm legal limit |
| Lead90th percentile of homes tested, 1 over the action level · Customer taps · 2025 report, page 2 | 5.13 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal26x the health goal |
| Bariumhighest measured · range 0.06 to 0.18 · sampled 2024 · 2025 report, page 2 | 0.18 ppm | 2 ppm | 2 ppm | Below the health goal |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.13 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper. 20 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Cole County Pwsd 1’s water between May 2024 and Nov 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA5.8 pptFound in 1 of 14 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (EPA testing)
What removes it: Reverse osmosis.
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