We read 23 results from Roy L Utilities’s 2025 water quality report. No results over a legal limit; 6 above a health goal or guideline.
Serves about 150 people · Water system ID MO6251710 · 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 |
|---|---|---|---|---|
| Fluoridehighest measured · range 1.98 to 1.98 · sampled 2024 · 2025 report, page 2 | 1.98 ppm | 1 ppm | 4 ppm | Above the health goal2x the health goal |
| Gross alpha (radioactivity)highest measured · range 8.6 to 8.6 · 2025 report, page 2 | 8.6 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 · sampled 2023 · Customer taps · 2025 report, page 2 | 3.65 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal18x the health goal |
| Radium (combined 226 + 228)highest measured · range 3.8 to 3.8 · 2025 report, page 2 | 3.8 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 3.8 to 3.8 · 2025 report, page 2 | 3.8 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal76x the health goal |
| Total dissolved solidshighest measured · range 533 to 533 · sampled 2024 · 2025 report, page 3 | 533 ppm | — | 500 ppm guideline | Above the guideline1.1x the guideline (taste, odor or stains; not a health limit) |
| Aluminumhighest measured · range 0.02 to 0.02 · sampled 2024 · 2025 report, page 3 | 0.02 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.05 to 0.05 · sampled 2024 · 2025 report, page 2 | 0.05 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 32.4 to 32.4 · sampled 2024 · 2025 report, page 3 | 32.4 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 | 0.22 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Ironhighest measured · range 0.03 to 0.03 · sampled 2024 · 2025 report, page 3 | 0.03 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0014 to 0.0014 · sampled 2024 · 2025 report, page 3 | 0.0014 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.03 to 0.03 · 2025 report, page 2 | 0.03 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.03 to 8.03 · sampled 2024 · 2025 report, page 3 | 8.03 | — | — | Normal range |
| Sulfatehighest measured · range 59.1 to 59.1 · sampled 2024 · 2025 report, page 3 | 59.1 ppm | — | 250 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.05 to 0.05 · sampled 2024 · 2025 report, page 3 | 0.05 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 416 to 416 · sampled 2024 · 2025 report, page 3 | 416 ppm | None set | None | No health limit |
| Calciumhighest measured · range 65.2 to 65.2 · sampled 2024 · 2025 report, page 3 | 65.2 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 19.2 to 19.2 · sampled 2024 · 2025 report, page 3 | 19.2 gpg (328 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 40.2 to 40.2 · sampled 2024 · 2025 report, page 3 | 40.2 ppm | None set | None | No health limit |
| Nickelhighest measured · range 2.4 to 2.4 · printed as 0.0024 MG/L · sampled 2024 · 2025 report, page 3 | 2.4 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 12.7 to 12.7 · sampled 2024 · 2025 report, page 3 | 12.7 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 70 to 70 · sampled 2024 · 2025 report, page 3 | 70 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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-226
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Salty taste / high TDS
Found: Total dissolved solids
What removes it: Reverse osmosis.
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