We read 26 results from Dexter Pws’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 7,927 people · Water system ID MO4010216 · 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 · sampled 2024 · Customer taps · 2025 report, page 2 | 2.03 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal10x the health goal |
| Radium (combined 226 + 228)highest measured · range 2.9 to 2.9 · sampled 2024 · 2025 report, page 2 | 2.9 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 1.3 to 1.3 · sampled 2024 · 2025 report, page 2 | 1.3 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal26x the health goal |
| Radium-228highest measured · range 1.6 to 1.6 · sampled 2024 · 2025 report, page 2 | 1.6 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal84x the health goal |
| Aluminumhighest measured · range ND to 0.01 · sampled 2024 · 2025 report, page 3 | 0.01 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.08 to 0.09 · sampled 2024 · 2025 report, page 2 | 0.09 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 38.7 to 49.1 · sampled 2024 · 2025 report, page 3 | 49.1 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 | 0.25 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 6.25 to 6.25 · DBPDUAL-03 · 2025 report, page 2 | 6 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 67.7 to 67.7 · DBPDUAL-03 · 2025 report, page 2 | 68 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.48 to 0.59 · sampled 2024 · 2025 report, page 2 | 0.59 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range ND to 0.08 · sampled 2024 · 2025 report, page 3 | 0.08 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range ND to 0.0081 · sampled 2024 · 2025 report, page 3 | 0.0081 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.01 to 0.03 · 2025 report, page 2 | 0.03 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.63 to 8.17 · sampled 2024 · 2025 report, page 3 | 8.17 | — | — | Normal range |
| Sulfatehighest measured · range 11.8 to 13.7 · sampled 2024 · 2025 report, page 3 | 13.7 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 304 to 337 · sampled 2024 · 2025 report, page 3 | 337 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0032 to 0.0038 · sampled 2024 · 2025 report, page 3 | 0.0038 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 258 to 264 · sampled 2024 · 2025 report, page 3 | 264 ppm | None set | None | No health limit |
| Calciumhighest measured · range 51.1 to 51.8 · sampled 2024 · 2025 report, page 3 | 51.8 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 11.5 to 11.6 · sampled 2024 · 2025 report, page 3 | 11.6 gpg (199 ppm) | — | — | Very hard |
| Lithiumhighest measured · range 34 to 88.7 · sampled 2024 · highest of 2 sources · 2025 report, page 3 | 88.7 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 16.3 to 17.3 · sampled 2024 · 2025 report, page 3 | 17.3 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.36 to 2.13 · printed as 0.00213 MG/L · sampled 2024 · 2025 report, page 3 | 2.13 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 3.72 to 5.11 · sampled 2024 · 2025 report, page 3 | 5.11 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 35.5 to 45.6 · sampled 2024 · 2025 report, page 3 | 45.6 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Dexter Pws’s water between Jun 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium88.7 ppbFound in 4 of 4 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.
Radium and uranium
Found: Radium (combined 226 + 228), Radium-226, Radium-228
What removes it: Reverse osmosis.
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