Marlow, OK tap water
Supplied mostly by Marlow Municipal Authority, plus 1 other utility. 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)
Area estimate1.1–64 ppm (Worth knowing)
Typical 10 ppm
Water changes can't take your tank's nitrate below this level.
Area estimate from nearby wells: USGS well samples in your state (2000–2021).
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.
Who supplies Marlow, OK
Marlow Municipal Authority
Serves 75% of residents · Groundwater (wells) · Chlorine
Stephens Co RWD #5
Serves 23% of residents · Buys water from Duncan Public Utilities Authority · 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.