We read 21 results from College of the Ozarks’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 1,700 people · Water system ID MO5069033 · 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 |
|---|---|---|---|---|
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.35 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.2x the health goal |
| Gross alpha (radioactivity)highest measured · range 5.7 to 5.7 · sampled 2024 · 2025 report, page 2 | 5.7 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 2 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal10x the health goal |
| Radium (combined 226 + 228)highest measured · range 2.4 to 2.4 · sampled 2024 · 2025 report, page 2 | 2.4 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 2.4 to 2.4 · sampled 2024 · 2025 report, page 2 | 2.4 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal48x the health goal |
| Bariumhighest measured · range 0.03 to 0.03 · 2025 report, page 2 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 10.2 to 10.2 · 2025 report, page 3 | 10.2 ppm | — | 250 ppm guideline | Within the guideline |
| Disinfection byproducts (HAA5)highest running annual average · range 11.2 to 18.4 · DBPDUAL-01, highest of 2 sources · 2025 report, page 2 | 19 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 46.3 to 91.3 · DBPDUAL-01, highest of 2 sources · 2025 report, page 2 | 65 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range ND to 0.74 · 2025 report, page 2 | 0.74 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.94 to 7.94 · 2025 report, page 3 | 7.94 | — | — | Normal range |
| Sulfatehighest measured · range 10 to 10 · 2025 report, page 3 | 10 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 168 to 168 · 2025 report, page 3 | 168 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.01 to 0.01 · 2025 report, page 3 | 0.01 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 223 to 223 · highest of 2 sources · 2025 report, page 3 | 223 ppm | None set | None | No health limit |
| Calciumhighest measured · range 35.7 to 35.7 · 2025 report, page 3 | 35.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 6.84 to 6.84 · 2025 report, page 3 | 6.84 gpg (117 ppm) | — | — | Moderately hard |
| Magnesiumhighest measured · range 6.85 to 6.85 · 2025 report, page 3 | 6.85 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.09 to 1.09 · printed as 0.00109 MG/L · 2025 report, page 3 | 1.09 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 2.21 to 2.21 · 2025 report, page 3 | 2.21 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 4.52 to 4.52 · 2025 report, page 3 | 4.52 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-226
What removes it: Reverse osmosis.
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