We read 12 results from Mo American Tri State’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 8,680 people · Water system ID MO5024601 · 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 3.4 to 4.5 · sampled 2023 · highest of 2 sources · 2025 report, page 2 | 4.5 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 1 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 5 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal25x the health goal |
| Radium (combined 226 + 228)highest measured · range 1.1 to 1.3 · sampled 2023 · 2025 report, page 2 | 1.3 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 1.1 to 1.3 · sampled 2023 · 2025 report, page 2 | 1.3 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal26x the health goal |
| Uraniumhighest measured · range 0.84 to 0.84 · sampled 2022 · 2025 report, page 2 | 0.84 ppb | 0.6 ppb | 30 ppb | Above the health goal1.4x the health goal |
| Chloridehighest measured · range 3.3 to 22.8 · 2025 report, page 2 | 22.8 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 | 0.18 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Sulfatehighest measured · range 12.3 to 15.5 · 2025 report, page 2 | 15.5 ppm | — | 250 ppm guideline | Within the guideline |
| Calciumhighest measured · range 53 to 60 · 2025 report, page 2 | 60 ppm | None set | None | No health limit |
| Magnesiumhighest measured · range 29 to 31 · 2025 report, page 2 | 31 ppm | None set | None | No health limit |
| Silicahighest measured · range 11 to 11 · 2025 report, page 2 | 11 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 2.7 to 17.8 · 2025 report, page 2 | 17.8 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), Radium (combined 226 + 228), Radium-226, Uranium
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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