Hudson, OH tap water
Supplied mostly by Hudson City PWS, plus 2 other utilities. Here's what the water means for your fish.
Disinfectant
Chlorine or chloramine
Utilities here use chlorine or chloramine, depending on which one serves your address. Chlorine slowly gases off from standing water; chloramine doesn't.
Safety for fish and shrimp
Nitrite (NO₂)
Up to 0.04 ppm (Low)
Typically not detected
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2015).
Nitrate (NO₃)
Up to 5 ppm (Low)
Typically not detected
Not detected in testing, so water changes lower your tank's nitrate well.
From EPA monitoring data; Cleveland Water's 2025 water quality report (2012–2025).
Copper at home taps (first draw)
0.06 ppm (Low)
The 90th percentile of first-draw samples from homes: water that sat in household pipes for at least six hours.
Low. Water that sits in household pipes overnight can carry more than this.
Published by your utility: Cleveland Water's 2025 water quality report.
Chlorine or chloramine at the tap
0.9–1.7 ppm
Typical 1.2 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: Cleveland Water's 2025 water quality report.
Water chemistry
General hardness
105–130 ppm
Typical 117 ppm
Moderately soft to medium. Suits most community fish and plants.
Published by your utility: Cleveland Water's 2025 water quality report.
Carbonate hardness (alkalinity)
82 ppm
Moderate buffering. pH should stay fairly steady.
Published by your utility: Cleveland Water's 2025 water quality report.
pH
7–7.6
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
Published by your utility: Cleveland Water's 2025 water quality report.
Total dissolved solids
180 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Published by your utility: Cleveland Water's 2025 water quality report.
- Hudson City PWS, Cleveland Water and Akron City PWS add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Hudson City PWS softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Hudson, OH
Hudson City PWS
Serves 50% of residents · Groundwater (wells) · Chlorine
- 2025 water quality report
Cleveland Water
Serves 24% of residents · Lake or river water · Chlorine
Akron City PWS
Serves 22% of residents · Lake or river water · Chloramine
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.