We read 21 results from Hopkins Pws’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 550 people · Water system ID MO1010378 · 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 | 0.85 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal2.8x the health goal |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 1.77 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal8.9x the health goal |
| Aluminumhighest measured · range 0.02 to 0.02 · sampled 2023 · 2025 report, page 3 | 0.02 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.11 to 0.11 · sampled 2023 · 2025 report, page 2 | 0.11 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 45.8 to 45.8 · sampled 2023 · 2025 report, page 3 | 45.8 ppm | — | 250 ppm guideline | Within the guideline |
| Disinfection byproducts (HAA5)highest running annual average · range 30.5 to 52.1 · DBPDUAL-02, highest of 2 sources · 2025 report, page 2 | 39 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 51.2 to 81.1 · DBPDUAL-02, highest of 2 sources · 2025 report, page 2 | 65 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.12 to 0.12 · sampled 2023 · 2025 report, page 2 | 0.12 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 |
| Manganesehighest measured · range 0.0019 to 0.0019 · sampled 2023 · 2025 report, page 3 | 0.0019 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.03 to 0.03 · 2025 report, page 2 | 0.03 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.43 to 7.43 · sampled 2023 · 2025 report, page 3 | 7.43 | — | — | Normal range |
| Sulfatehighest measured · range 56.8 to 56.8 · sampled 2023 · 2025 report, page 3 | 56.8 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 385 to 385 · sampled 2023 · 2025 report, page 3 | 385 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0025 to 0.0025 · sampled 2023 · 2025 report, page 3 | 0.0025 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 251 to 251 · sampled 2023 · 2025 report, page 3 | 251 ppm | None set | None | No health limit |
| Calciumhighest measured · range 77.4 to 77.4 · sampled 2023 · 2025 report, page 3 | 77.4 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 13.6 to 13.6 · sampled 2023 · 2025 report, page 3 | 13.6 gpg (233 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 9.78 to 9.78 · sampled 2023 · 2025 report, page 3 | 9.78 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 1.9 to 1.9 · sampled 2023 · 2025 report, page 3 | 1.9 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 31.1 to 31.1 · sampled 2023 · 2025 report, page 3 | 31.1 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: Copper, Lead
What removes it: Reverse osmosis or Certified carbon block or RO.
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