We read 19 results from Hornersville Pws’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 526 people · Water system ID MO4010379 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range 5.38 to 7.08 · 2025 report, page 2 | 7.08 ppb | 0.004 ppb | 10 ppb | Above the health goal1,770x the health goal |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 0.33 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.1x the health goal |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 1.16 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5.8x the health goal |
| pHhighest measured · range 8.58 to 8.69 · 2025 report, page 3 | 8.69 | — | — | Outside the normal rangeAlkaline water can leave scale |
| Total dissolved solidshighest measured · range 604 to 736 · 2025 report, page 3 | 736 ppm | — | 500 ppm guideline | Above the guideline1.5x the guideline (taste, odor or stains; not a health limit) |
| Aluminumhighest measured · range ND to 0.05 · 2025 report, page 3 | 0.05 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.003 to 0.0052 · 2025 report, page 2 | 0.0052 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 5.18 to 73.5 · 2025 report, page 3 | 73.5 ppm | — | 250 ppm guideline | Within the guideline |
| Fluoridehighest measured · range 0.6 to 0.68 · 2025 report, page 2 | 0.68 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.04 to 0.08 · 2025 report, page 3 | 0.08 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0026 to 0.0032 · 2025 report, page 3 | 0.0032 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range ND to 0.1 · 2025 report, page 2 | 0.1 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range ND to 30.6 · 2025 report, page 3 | 30.6 ppm | — | 250 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0014 to 0.02 · 2025 report, page 3 | 0.02 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 545 to 568 · 2025 report, page 3 | 568 ppm | None set | None | No health limit |
| Calciumhighest measured · range 2.03 to 2.18 · 2025 report, page 3 | 2.18 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 0.3 to 0.32 · 2025 report, page 3 | 0.32 gpg (5.45 ppm) | — | — | Soft |
| Potassiumhighest measured · range 2 to 2.58 · 2025 report, page 3 | 2.58 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 232 to 264 · 2025 report, page 3 | 264 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.
Salty taste / high TDS
Found: Total dissolved solids
What removes it: Reverse osmosis.
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