We read 22 results from Hannibal Pws’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 17,108 people · Water system ID MO2010344 · 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 | 5.28 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal26x the health goal |
| PFOA (a PFAS)highest measured · range ND to 1.1 · sampled 2024 · 2025 report, page 3 | 1.1 ppt | 0.007 ppt | 4 ppt from 2029 | Above the health goal157x the health goal |
| Aluminumhighest measured · range 0.07 to 0.07 · 2025 report, page 3 | 0.07 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.06 to 0.06 · 2025 report, page 2 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 37.1 to 37.1 · 2025 report, page 3 | 37.1 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 | 0.08 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 8.84 to 12.6 · DBPDUAL-04, highest of 4 sources · 2025 report, page 2 | 18 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 37.9 to 65.2 · DBPDUAL-01, highest of 4 sources · 2025 report, page 2 | 67 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.62 to 0.62 · 2025 report, page 2 | 0.62 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range 1.35 to 6.97 · 2025 report, page 2 | 6.97 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.61 to 7.61 · 2025 report, page 3 | 7.61 | — | — | Normal range |
| Sulfatehighest measured · range 33.2 to 33.2 · 2025 report, page 3 | 33.2 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 304 to 304 · 2025 report, page 3 | 304 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0011 to 0.0011 · 2025 report, page 3 | 0.0011 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 283 to 283 · highest of 2 sources · 2025 report, page 3 | 283 ppm | None set | None | No health limit |
| Calciumhighest measured · range 57.7 to 57.7 · 2025 report, page 3 | 57.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 13.1 to 13.1 · 2025 report, page 3 | 13.1 gpg (224 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 19.5 to 19.5 · 2025 report, page 3 | 19.5 ppm | None set | None | No health limit |
| Nickelhighest measured · range 3.06 to 3.06 · printed as 0.00306 MG/L · 2025 report, page 3 | 3.06 ppb | None set | None | No health limit |
| PFBS (a PFAS)highest measured · range ND to 1.3 · sampled 2024 · 2025 report, page 3 | 1.3 ppt | None set | None | No health limit |
| Potassiumhighest measured · range 3.38 to 3.38 · 2025 report, page 3 | 3.38 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 16.3 to 16.3 · 2025 report, page 3 | 16.3 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.
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.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
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