We read 19 results from Weston Pws’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 1,850 people · Water system ID MO1010851 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range 1.18 to 1.18 · sampled 2023 · 2025 report, page 2 | 1.18 ppb | 0.004 ppb | 10 ppb | Above the health goal295x the health goal |
| Bariumhighest measured · range 0.1 to 0.1 · sampled 2023 · 2025 report, page 2 | 0.1 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 25.1 to 25.1 · sampled 2023 · 2025 report, page 3 | 25.1 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2023 · 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 13.6 to 13.6 · DBPDUAL-01, highest of 2 sources · 2025 report, page 2 | 14 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 63.4 to 63.4 · DBPDUAL-02, highest of 2 sources · 2025 report, page 2 | 63 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.22 to 0.22 · sampled 2023 · 2025 report, page 2 | 0.22 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.02 to 0.02 · sampled 2023 · 2025 report, page 3 | 0.02 ppm | — | 0.3 ppm guideline | Within the guideline |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range 0.04 to 0.04 · 2025 report, page 2 | 0.04 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.42 to 8.42 · sampled 2023 · 2025 report, page 3 | 8.42 | — | — | Normal range |
| Sulfatehighest measured · range 46.6 to 46.6 · sampled 2023 · 2025 report, page 3 | 46.6 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 239 to 239 · sampled 2023 · 2025 report, page 3 | 239 ppm | — | 500 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 160 to 160 · sampled 2023 · 2025 report, page 3 | 160 ppm | None set | None | No health limit |
| Calciumhighest measured · range 38.7 to 38.7 · sampled 2023 · 2025 report, page 3 | 38.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 8.83 to 8.83 · sampled 2023 · 2025 report, page 3 | 8.83 gpg (151 ppm) | — | — | Hard |
| Magnesiumhighest measured · range 13.2 to 13.2 · sampled 2023 · 2025 report, page 3 | 13.2 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 4.28 to 4.28 · sampled 2023 · 2025 report, page 3 | 4.28 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 15.6 to 15.6 · sampled 2023 · 2025 report, page 3 | 15.6 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.
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.
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