El Reno, OK tap water
Supplied by El Reno. 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 figure0.4–3 ppm (Low)
Typical 0.4 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Oklahoma City, which supplies El Reno (2025).
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)
48 ppm
Moderate buffering. pH should stay fairly steady.
From EPA monitoring data (2012–2019).
pH
Not published yet
We haven't found this number yet. A drop test kit gives you your exact reading.
- El Reno adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- El Reno softens its water at the plant, so it may be softer than the local groundwater.
Who supplies El Reno, OK
El Reno
Serves 60% of residents · Buys water from Oklahoma City · 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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.