We read 21 results from Polo Pws’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 575 people · Water system ID MO1010653 · 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 |
|---|---|---|---|---|
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.36 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.2x the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 5.53 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal28x the health goal |
| Aluminumhighest measured · range 0.06 to 0.06 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.06 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.17 to 0.17 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 2 | 0.17 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 21.5 to 21.5 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 21.5 ppm | — | 250 ppm guideline | Within the guideline |
| Disinfection byproducts (HAA5)highest running annual average · range 18.7 to 20 · Purchased water: Distribution system, highest of 4 sources · 2025 report, page 3 | 20 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 51.5 to 62.3 · Purchased water: Distribution system, highest of 4 sources · 2025 report, page 3 | 62 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.16 to 0.16 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 2 | 0.16 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.0054 to 0.0054 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.0054 ppm | — | 0.3 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.02 to 0.02 · Purchased water (wholesaler) · 2025 report, page 2 | 0.02 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.81 to 7.81 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 7.81 | — | — | Normal range |
| Sulfatehighest measured · range 41.3 to 41.3 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 41.3 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 285 to 285 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 285 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0042 to 0.0042 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.0042 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 205 to 205 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 205 ppm | None set | None | No health limit |
| Calciumhighest measured · range 46.2 to 46.2 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 46.2 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 12.5 to 12.5 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 12.5 gpg (214 ppm) | — | — | Very hard |
| Lithiumhighest measured · range 19 to 22 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 22 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 24 to 24 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 24 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 6.62 to 6.62 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 6.62 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 7.56 to 7.56 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 7.56 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.
Lead
Found: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
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