We read 18 results from Ste Genevieve County Pwsd 1 Sc’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 3,718 people · Water system ID MO4024543 · 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 |
|---|---|---|---|---|
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 1.5 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal7.5x the health goal |
| Aluminumhighest measured · range 0.01 to 0.01 · 2025 report, page 3 | 0.01 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.01 to 0.01 · 2025 report, page 2 | 0.01 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 | 0.15 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluoridehighest measured · range 0.11 to 0.11 · 2025 report, page 2 | 0.11 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 0.09 to 0.85 · 2025 report, page 2 | 0.85 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.13 to 8.13 · 2025 report, page 3 | 8.13 | — | — | Normal range |
| Sulfatehighest measured · range 27 to 27 · 2025 report, page 3 | 27 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 340 to 340 · 2025 report, page 3 | 340 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.18 to 0.18 · 2025 report, page 3 | 0.18 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 346 to 346 · 2025 report, page 3 | 346 ppm | None set | None | No health limit |
| Calciumhighest measured · range 66 to 66 · 2025 report, page 3 | 66 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 20.8 to 20.8 · 2025 report, page 3 | 20.8 gpg (356 ppm) | — | — | Very hard |
| Lithiumhighest measured · range ND to 12.4 · sampled 2023 · highest of 2 sources · 2025 report, page 3 | 12.4 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 46.6 to 46.6 · 2025 report, page 3 | 46.6 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.79 to 1.79 · printed as 0.00179 MG/L · 2025 report, page 3 | 1.79 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 1.51 to 1.51 · 2025 report, page 3 | 1.51 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 4.38 to 4.38 · 2025 report, page 3 | 4.38 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. 1 number we weren’t sure about is held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Ste Genevieve County Pwsd 1 Sc’s water between May 2023 and Nov 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium12.4 ppbFound in 1 of 10 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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