We read 11 results from Clarksville Water Department’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 251,864 people · Water system ID TN0000116 · 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 |
|---|---|---|---|---|
| Chlorineaverage · range 0.3 to 3.2 · Distribution system · 2025 report, page 6 | 2 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 50 homes tested, 0 over the action level · sampled 2024 · Customer taps (50 samples) · 2025 report, page 6 | 0.23 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 17 to 43 · Distribution system · 2025 report, page 6 | 35 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 29 to 63 · Distribution system · 2025 report, page 6 | 49 ppb | None set | 80 ppb | Below the legal limit |
| E. colias reported · Distribution system · 2025 report, page 6 | Not detected | 0 positive samples | 0 positive samples | Not detected |
| Fluorideaverage · range 0.38 to 0.56 · Treatment plant · 2025 report, page 6 | 0.46 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lead90th percentile of 50 homes tested, 0 over the action level · sampled 2024 · Customer taps (50 samples) · 2025 report, page 6 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)as reported · Treatment plant · 2025 report, page 6 | 0.37 ppm | 10 ppm | 10 ppm | Below the health goal |
| Total coliform bacteriahighest month · Distribution system · 2025 report, page 6 | Not detected | 0 % positive | 5 % positive | Not detected |
| Turbidity (cloudiness)highest measured · range 0.02 to 0.09 · Treatment plant · 2025 report, page 6 | 0.09 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumas reported · Treatment plant · 2025 report, page 6 | 8.66 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 in this report is above a health goal or legal limit. If you’re bothered by taste, smell, hardness or spots, or your home has older pipes, the filter catalog and buyer questions can help you pick, and a test of your own tap shows what your plumbing adds.
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