We read 10 results from North Kona’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 29,581 people · Water system ID HI0000131 · 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 |
|---|---|---|---|---|
| Gross beta (radioactivity)single sample · listed as a violation in the report · Wells · 2025 report, page 3 | 8.87 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Uraniumhighest measured · range ND to 2.5 · listed as a violation in the report · Wells · 2025 report, page 3 | 2.5 ppb | 0.6 ppb | 30 ppb | Above the health goal4.2x the health goal |
| Bariumhighest measured · range 0.0058 to 0.0059 · listed as a violation in the report · Wells · 2025 report, page 3 | 0.0059 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chromium (total)highest measured · range 2.1 to 4.8 · listed as a violation in the report · Wells · 2025 report, page 3 | 4.8 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of 33 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 4 | 0.06 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest measured · range 2.75 to 5.03 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 5.03 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.24 to 0.76 · listed as a violation in the report · Wells · 2025 report, page 3 | 0.76 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of 33 homes tested, 0 over the action level · listed as a violation in the report · Customer taps · 2025 report, page 4 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)highest measured · range 0.56 to 1.6 · listed as a violation in the report · Wells · 2025 report, page 3 | 1.6 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sodiumhighest measured · range 53 to 72 · listed as a violation in the report · Wells · 2025 report, page 4 | 72 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.
Radium and uranium
Found: Gross beta (radioactivity), Uranium
What removes it: Reverse osmosis.
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