Clarksville, TN tap water
Supplied by City of Clarksville Water Department. Here's what its water means for your fish.
Disinfectant
Chlorine
Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.
Safety for fish and shrimp
Nitrate (NO₃)
1.6 ppm (Low)
Low, so water changes lower your tank's nitrate well.
Published by your utility: City of Clarksville Water Department's 2025 water quality report.
Copper at home taps (first draw)
0.04–0.31 ppm (Worth knowing)
The 90th percentile of first-draw samples from homes: water that sat in household pipes for at least six hours.
Shrimp and snails are sensitive to copper. Water that sits in household pipes picks up the most; it drops once the tap has run for a minute.
Published by your utility: City of Clarksville Water Department's 2025 water quality report.
Chlorine or chloramine at the tap
0.3–3.2 ppm
Typical 2 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
Published by your utility: City of Clarksville Water Department's 2025 water quality report.
Water chemistry
General hardness
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
Carbonate hardness (alkalinity)
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
pH
7.5
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2014–2019).
- City of Clarksville Water Department adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Clarksville, TN
- 2025 water quality report
City of Clarksville Water Department
Serves 87% of residents · Lake or river water · Chlorine
Our data comes from public records and is still incomplete. Many utilities don't publish every number, so we're adding more all the time. Your city's range is a starting point: testing your own tap is the only way to know exactly what's in it.
Tap water lookup covers US cities only for now. Want to know why it matters? Read our story on tap water.
Compiled by Shoal & Stem from public records. Free to cite with a link.