Katonah, NY tap water
Supplied by Bedford Consolidated W.D.. 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2019).
Nitrate (NO₃)
0.9–30 ppm (High)
Typical 26 ppm
High for tap water. Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Supplier's figure17–463 ppm
Typical 32 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From the utility that supplies yours: New York City System, which supplies Bedford Consolidated W.D. (2025).
Carbonate hardness (alkalinity)
Supplier's figure16–72 ppm
Typical 25 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From the utility that supplies yours: New York City System, which supplies Bedford Consolidated W.D. (2025).
pH
7.6
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2014).
Total dissolved solids
Supplier's figure45–240 ppm
Typical 73 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
From the utility that supplies yours: New York City System, which supplies Bedford Consolidated W.D. (2025).
- Bedford Consolidated W.D. adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Katonah, NY
Bedford Consolidated W.D.
Serves 73% of residents · Buys water from New York City System · 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.