We read 20 results from Ralls County Pwsd 1’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 6,755 people · Water system ID MO2024499 · 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 |
|---|---|---|---|---|
| Bariumhighest measured · range 0.04 to 0.04 · 2025 report, page 2 | 0.04 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 46.4 to 46.4 · 2025 report, page 3 | 46.4 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 0.03 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 5.56 to 24.4 · DBPDUAL-03, highest of 2 sources · 2025 report, page 2 | 15 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 41 to 80.6 · DBPDUAL-03, highest of 2 sources · 2025 report, page 2 | 58 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.13 to 0.13 · 2025 report, page 2 | 0.13 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Manganesehighest measured · range 0.0018 to 0.0018 · 2025 report, page 3 | 0.0018 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.19 to 0.19 · 2025 report, page 2 | 0.19 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.15 to 8.15 · 2025 report, page 3 | 8.15 | — | — | Normal range |
| Sulfatehighest measured · range 8.52 to 8.52 · 2025 report, page 3 | 8.52 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 204 to 204 · 2025 report, page 3 | 204 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0012 to 0.0012 · 2025 report, page 3 | 0.0012 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 235 to 235 · 2025 report, page 3 | 235 ppm | None set | None | No health limit |
| Calciumhighest measured · range 14.6 to 14.6 · 2025 report, page 3 | 14.6 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 5.91 to 5.91 · 2025 report, page 3 | 5.91 gpg (101 ppm) | — | — | Moderately hard |
| Lithiumhighest measured · range 14.2 to 14.2 · 2025 report, page 3 | 14.2 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 15.6 to 15.6 · 2025 report, page 3 | 15.6 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 2.55 to 2.55 · 2025 report, page 3 | 2.55 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 35.9 to 35.9 · 2025 report, page 3 | 35.9 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. 2 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Ralls County Pwsd 1’s water between Jun 2025 and Dec 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA6.3 pptFound in 2 of 2 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFBS11.4 pptFound in 2 of 2 samples · highest resultNo federal limit in force for this one
- Lithium14.2 ppbFound in 2 of 2 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.
PFAS ("forever chemicals")
Found: PFOA (EPA testing)
What removes it: Reverse osmosis.
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