We read 10 results from Highland County Water Company, INC.’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 28,421 people · Water system ID OH3600514 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
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 30 homes tested, 0 over the action level · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 3 | 0.48 ppm | 0.3 ppm | 1.3 ppm (action level) | Above the health goal1.6x the health goal |
| Fluoridehighest measured · range 0.84 to 1.27 · listed as a violation in the report · Treated water · 2025 report, page 2 | 1.05 ppm | 1 ppm | 4 ppm | Above the health goal1.1x the health goal |
| Bariumhighest measured · range 0.1 to 0.1 · listed as a violation in the report · sampled 2024 · Treated water · 2025 report, page 2 | 0.1 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 1.34 to 1.54 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 1.44 ppm | None set | 4 ppm | Below the legal limit |
| Disinfection byproducts (HAA5)highest measured · range ND to 8.5 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 8.5 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range 19.8 to 30.9 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 30.9 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range 0.41 to 0.41 · listed as a violation in the report · Treated water · 2025 report, page 2 | 0.41 ppm | 10 ppm | 10 ppm | Below the health goal |
| Bromodichloromethaneaverage · range 6.9 to 9.6 · Distribution system · 2025 report, page 3 | 8.25 ppb | None set | None | No health limit |
| Chloroformaverage · range 6.7 to 15.5 · Distribution system · 2025 report, page 3 | 11.1 ppb | None set | None | No health limit |
| Dibromochloromethaneaverage · range 5 to 5.1 · Distribution system · 2025 report, page 3 | 5.05 ppb | 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.
Copper
Found: Copper
What removes it: Reverse osmosis.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
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