We read 10 results from West Knox Utility District’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 77,825 people · Water system ID TN0000371 · 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 |
|---|---|---|---|---|
| Radium (combined 226 + 228)single sample · listed as a violation in the report · sampled 2023 · Plant B, highest of 2 sources · 2025 report, page 2 | 0.82 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumsingle sample · listed as a violation in the report · sampled 2020 · Plant A, highest of 2 sources · 2025 report, page 2 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorineaverage · range 1 to 2.2 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 1.77 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 2 | 0.06 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 10 to 56 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 31 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 11 to 68 · listed as a violation in the report · Distribution system · 2025 report, page 2 | 37 ppb | None set | 80 ppb | Below the legal limit |
| Lead90th percentile of homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 2 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)single sample · listed as a violation in the report · Plant A, highest of 2 sources · 2025 report, page 2 | 0.49 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · range 0.01 to 0.2 · listed as a violation in the report · Plant A, highest of 2 sources · 2025 report, page 2 | 0.2 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumsingle sample · listed as a violation in the report · Plant A, highest of 2 sources · 2025 report, page 2 | 11.6 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: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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