We read 19 results from Caruthersville Pws’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 5,562 people · Water system ID MO4010143 · 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, 1 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 11.4 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal57x the health goal |
| Aluminumhighest measured · range 0.03 to 0.03 · sampled 2023 · 2025 report, page 3 | 0.03 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.09 to 0.09 · sampled 2023 · 2025 report, page 2 | 0.09 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 7.25 to 7.25 · sampled 2023 · 2025 report, page 3 | 7.25 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 1 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 0.29 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest running annual average · range 0.76 to 0.76 · DBPDUAL-01 · 2025 report, page 2 | 1 ppb | None set | 80 ppb | Below the legal limit |
| Ironhighest measured · range 0.0067 to 0.0067 · sampled 2023 · 2025 report, page 3 | 0.0067 ppm | — | 0.3 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.01 to 0.01 · 2025 report, page 2 | 0.01 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.41 to 7.41 · sampled 2023 · 2025 report, page 3 | 7.41 | — | — | Normal range |
| Sulfatehighest measured · range 11.8 to 11.8 · sampled 2023 · 2025 report, page 3 | 11.8 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 115 to 115 · sampled 2023 · 2025 report, page 3 | 115 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0088 to 0.0088 · sampled 2023 · 2025 report, page 3 | 0.0088 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 156 to 156 · sampled 2023 · 2025 report, page 3 | 156 ppm | None set | None | No health limit |
| Calciumhighest measured · range 4.61 to 4.61 · sampled 2023 · 2025 report, page 3 | 4.61 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 1.12 to 1.12 · sampled 2023 · 2025 report, page 3 | 1.12 gpg (19.1 ppm) | — | — | Soft |
| Lithiumhighest measured · range 27 to 33.3 · sampled 2023 · highest of 2 sources · 2025 report, page 3 | 33.3 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 1.85 to 1.85 · sampled 2023 · 2025 report, page 3 | 1.85 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 4.07 to 4.07 · sampled 2023 · 2025 report, page 3 | 4.07 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 31.9 to 31.9 · sampled 2023 · 2025 report, page 3 | 31.9 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. 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 Caruthersville Pws’s water between Apr 2023 and Oct 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium33.3 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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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