We read 20 results from St Charles County Pwsd 2 Dutzow’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 400 people · Water system ID MO6024628 · 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 |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range 3.8 to 3.8 · sampled 2022 · 2025 report, page 2 | 3.8 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Ironhighest measured · range 0.26 to 0.47 · sampled 2023 · 2025 report, page 3 | 0.47 ppm | — | 0.3 ppm guideline | Above the guideline1.6x the guideline (taste, odor or stains; not a health limit) |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 3.92 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal20x the health goal |
| Bariumhighest measured · range 0.11 to 0.15 · sampled 2023 · 2025 report, page 2 | 0.15 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 6.71 to 14.8 · sampled 2023 · 2025 report, page 3 | 14.8 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 0.11 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluoridehighest measured · range 0.18 to 0.38 · sampled 2023 · 2025 report, page 2 | 0.38 ppm | 1 ppm | 4 ppm | Below the health goal |
| Manganesehighest measured · range 0.0078 to 0.02 · sampled 2023 · 2025 report, page 3 | 0.02 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.2 to 0.27 · 2025 report, page 2 | 0.27 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.64 to 8.11 · sampled 2023 · 2025 report, page 3 | 8.11 | — | — | Normal range |
| Sulfatehighest measured · range 15.4 to 25.4 · sampled 2023 · 2025 report, page 3 | 25.4 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 273 to 349 · sampled 2023 · 2025 report, page 3 | 349 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0029 to 0.05 · sampled 2023 · 2025 report, page 3 | 0.05 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 326 to 354 · sampled 2023 · 2025 report, page 3 | 354 ppm | None set | None | No health limit |
| Calciumhighest measured · range 56.5 to 64.5 · sampled 2023 · 2025 report, page 3 | 64.5 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 15.6 to 17.5 · sampled 2023 · 2025 report, page 3 | 17.5 gpg (299 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 30.4 to 33.4 · sampled 2023 · 2025 report, page 3 | 33.4 ppm | None set | None | No health limit |
| Nickelhighest measured · range ND to 2.54 · printed as 0.00254 MG/L · sampled 2023 · 2025 report, page 3 | 2.54 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 2.62 to 2.74 · sampled 2023 · 2025 report, page 3 | 2.74 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 7.55 to 16.2 · sampled 2023 · 2025 report, page 3 | 16.2 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.
Radium and uranium
Found: Gross alpha (radioactivity)
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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