We read 21 results from Mercer Pws’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 318 people · Water system ID MO2010515 · 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 · Customer taps · 2025 report, page 2 | 13.7 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal68x the health goal |
| Bariumhighest measured · range 0.02 to 0.02 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.02 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 33.4 to 33.4 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 33.4 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.1 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 14.2 to 30.1 · DBPDUAL-02, highest of 3 sources · 2025 report, page 2 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 43.4 to 96.9 · DBPDUAL-02, highest of 2 sources · 2025 report, page 2 | 74 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.17 to 0.17 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.17 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.03 to 0.03 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.03 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0032 to 0.0032 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.0032 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.22 to 0.22 · Purchased water (wholesaler) · 2025 report, page 3 | 0.22 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.16 to 8.16 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 8.16 | — | — | Normal range |
| Sulfatehighest measured · range 37.9 to 37.9 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 37.9 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 162 to 162 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 162 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.002 to 0.002 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 0.002 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 69.2 to 69.2 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 69.2 ppm | None set | None | No health limit |
| Calciumhighest measured · range 16.7 to 16.7 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 16.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 4.3 to 4.3 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 4.3 gpg (73.5 ppm) | — | — | Moderately hard |
| Magnesiumhighest measured · range 7.74 to 7.74 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 7.74 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.26 to 1.26 · printed as 0.00126 MG/L · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 1.26 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 2.27 to 2.27 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 2.27 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 20.6 to 20.6 · sampled 2023 · Purchased water (wholesaler) · 2025 report, page 3 | 20.6 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. 1 number we weren’t sure about is 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.
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