We read 23 results from High Hill Pws’s 2025 water quality report. No results over a legal limit; 7 above a health goal or guideline.
Serves about 300 people · Water system ID MO6010364 · 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 |
|---|---|---|---|---|
| Fluoridehighest measured · range 1.91 to 2.27 · 2025 report, page 2 | 2.27 ppm | 1 ppm | 4 ppm | Above the 2 ppm secondary standard1.1x the 2 ppm secondary standard (EPA's level to prevent tooth discoloration, also used as health guidance); below the 4 ppm legal limit |
| Gross alpha (radioactivity)highest measured · range 11.8 to 11.8 · 2025 report, page 2 | 11.8 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 4.6 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal23x the health goal |
| Radium (combined 226 + 228)highest measured · range 3.3 to 3.3 · 2025 report, page 2 | 3.3 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 3.3 to 3.3 · 2025 report, page 2 | 3.3 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal66x the health goal |
| Sulfatehighest measured · range 220 to 414 · 2025 report, page 3 | 414 ppm | — | 250 ppm guideline | Above the guideline1.7x the guideline (taste, odor or stains; not a health limit) |
| Total dissolved solidshighest measured · range 656 to 976 · 2025 report, page 3 | 976 ppm | — | 500 ppm guideline | Above the guideline2x the guideline (taste, odor or stains; not a health limit) |
| Aluminumhighest measured · range ND to 0.02 · 2025 report, page 3 | 0.02 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.01 to 0.03 · 2025 report, page 2 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 27.6 to 44.4 · 2025 report, page 3 | 44.4 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 0.11 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Ironhighest measured · range 0.08 to 0.29 · 2025 report, page 3 | 0.29 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0029 to 0.0048 · 2025 report, page 3 | 0.0048 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.09 to 0.09 · 2025 report, page 2 | 0.09 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.68 to 8.14 · 2025 report, page 3 | 8.14 | — | — | Normal range |
| Zinchighest measured · range 0.01 to 0.07 · 2025 report, page 3 | 0.07 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 305 to 351 · 2025 report, page 3 | 351 ppm | None set | None | No health limit |
| Calciumhighest measured · range 84.8 to 116 · 2025 report, page 3 | 116 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 23.5 to 33.5 · 2025 report, page 3 | 33.5 gpg (573 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 46.2 to 68.7 · 2025 report, page 3 | 68.7 ppm | None set | None | No health limit |
| Nickelhighest measured · range 2.64 to 6.49 · printed as 0.00649 MG/L · 2025 report, page 3 | 6.49 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 12.1 to 15.1 · 2025 report, page 3 | 15.1 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 67.1 to 81.4 · 2025 report, page 3 | 81.4 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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-226
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Salty taste / high TDS
Found: Sulfate, Total dissolved solids
What removes it: Reverse osmosis.
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