We read 18 results from Hawk Island Estates’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 150 people · Water system ID MO3036354 · 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 |
|---|---|---|---|---|
| Cadmiumhighest measured · range ND to 0.79 · sampled 2024 · 2025 report, page 2 | 0.79 ppb | 0.04 ppb | 5 ppb | Above the health goal20x the health goal |
| Ironhighest measured · range 0.01 to 8.15 · sampled 2024 · 2025 report, page 3 | 8.15 ppm | — | 0.3 ppm guideline | Above the guideline27x the guideline (taste, odor or stains; not a health limit) |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 3.23 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal16x the health goal |
| Manganesehighest measured · range 0.009 to 0.06 · sampled 2024 · 2025 report, page 3 | 0.06 ppm | — | 0.05 ppm guideline | Above the guideline1.3x the guideline (taste, odor or stains; not a health limit) |
| Bariumhighest measured · range 0.3 to 0.65 · sampled 2024 · 2025 report, page 2 | 0.65 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 8.81 to 13.6 · sampled 2024 · 2025 report, page 3 | 13.6 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 |
| pHhighest measured · range 7.64 to 8.25 · sampled 2024 · 2025 report, page 3 | 8.25 | — | — | Normal range |
| Sulfatehighest measured · range ND to 14.3 · sampled 2024 · 2025 report, page 3 | 14.3 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 301 to 408 · sampled 2024 · 2025 report, page 3 | 408 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.06 to 0.78 · sampled 2024 · 2025 report, page 3 | 0.78 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 315 to 396 · sampled 2024 · 2025 report, page 3 | 396 ppm | None set | None | No health limit |
| Calciumhighest measured · range 66.5 to 80.3 · sampled 2024 · 2025 report, page 3 | 80.3 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 18.8 to 23.9 · sampled 2024 · 2025 report, page 3 | 23.9 gpg (408 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 37.7 to 50.5 · sampled 2024 · 2025 report, page 3 | 50.5 ppm | None set | None | No health limit |
| Nickelhighest measured · range 2.63 to 4.08 · printed as 0.00408 MG/L · sampled 2024 · 2025 report, page 3 | 4.08 ppb | None set | None | No health limit |
| Potassiumhighest measured · range ND to 1.37 · sampled 2024 · 2025 report, page 3 | 1.37 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 5.05 to 11.1 · sampled 2024 · 2025 report, page 3 | 11.1 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.
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.
Sediment or cloudy water
Found: Iron, Manganese
What removes it: Oxidation filter.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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