Duncan, OK tap water
Supplied mostly by Duncan Public Utilities Authority, 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
Nitrate (NO₃)
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
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
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- Duncan Public Utilities Authority and Stephens Co RWD #5 soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Duncan, OK
Duncan Public Utilities Authority
Serves 41% of residents · Lake or river water · Chloramine
Stephens Co RWD #5
Serves 25% of residents · Buys water from Duncan Public Utilities Authority · Chloramine
Jefferson Co Cons RWD #1
Serves 9% of residents · Buys water from Waurika Public Works Authority · 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.