We read 4 results from Coal Hill Waterworks’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 1,372 people · Water system ID AR0000290 · 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 10 homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.37 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.2x the health goal |
| Lead90th percentile of 10 homes tested, 0 over the action level · printed as 0.0014 ppm · Customer taps · 2025 report, page 2 | 1.4 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal7x the health goal |
| Chlorineaverage · range 0.6 to 0.8 · 2025 report, page 2 | 0.66 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (TTHM)average · range 27 to 27.2 · 2025 report, page 2 | 27.1 ppb | None set | 80 ppb | Below the legal 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. 4 numbers we weren’t sure about are 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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