Carrollton, TX tap water
Supplied by City of Carrollton. Here's what its water means for your fish.
Disinfectant
Chloramine
Your water is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees a little ammonia. Some utilities switch to plain chlorine for a few weeks a year.
Safety for fish and shrimp
Nitrate (NO₃)
Supplier's figureUp to 3.5 ppm (Low)
Typical 3 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Dallas Water Utility, which supplies City of Carrollton (2025).
Water chemistry
General hardness
Supplier's figure106–179 ppm
Typical 131 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: Dallas Water Utility, which supplies City of Carrollton.
Carbonate hardness (alkalinity)
35–40 ppm
Typical 36 ppm
Moderate buffering. pH should stay fairly steady.
From EPA monitoring data (2013–2014).
pH
8.5–8.8
Typical 8.7
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From EPA monitoring data (2013–2014).
- City of Carrollton adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Carrollton, TX
City of Carrollton
Serves 99% of residents · Buys water from Dallas Water Utility · 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.