Yukon, OK tap water
Supplied mostly by Yukon, plus 1 other utility. Here's what the 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 about 0.79 ppm of ammonia here. Some utilities switch to plain chlorine for a few weeks a year.
Safety for fish and shrimp
Ammonia (with conditioner)
Estimate0.61–0.94 ppm (Worth knowing)
Typical 0.79 ppm
This is what a conditioner frees when it breaks the chloramine apart. A cycled filter clears it within a day; a big water change in a new or very small tank adds more of it at once. Some conditioners also bind ammonia for a day or so.
Estimated from the chloramine level Oklahoma City Water Utilities Trust (OCWUT) reports (2025).
Nitrite (NO₂)
Up to 0.05 ppm (Low)
Typically not detected
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2013–2019).
Nitrate (NO₃)
0.4–3 ppm (Low)
Typical 2.8 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data; Oklahoma City Water Utilities Trust (OCWUT)'s 2025 water quality report (2012–2025).
Chlorine or chloramine at the tap
2.5–3.9 ppm
Typical 3.3 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
Published by your utility: Oklahoma City Water Utilities Trust (OCWUT)'s 2025 water quality report.
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)
Supplier's figure38–53 ppm
Typical 44 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies yours: Oklahoma City, which supplies Yukon; 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.
- Yukon and Oklahoma City Water Utilities Trust (OCWUT) add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Yukon and Oklahoma City Water Utilities Trust (OCWUT) soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Yukon, OK
Yukon
Serves 74% of residents · Buys water from Oklahoma City · Chloramine
- 2025 water quality report
Oklahoma City Water Utilities Trust (OCWUT)
Serves 5% of residents · Lake or river water · 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.