Coon Rapids, MN tap water
Supplied by Coon Rapids. 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
Nitrate (NO₃)
Area estimate9.4–48 ppm (Worth knowing)
Typical 17 ppm
Water changes can't take your tank's nitrate below this level.
Area estimate from nearby wells: USGS well samples in your county (2000–2016).
Chlorine or chloramine at the tap
0.3–0.9 ppm
Typical 0.8 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.
From EPA monitoring data (2015–2019).
Water chemistry
General hardness
Area estimate139–430 ppm
Typical 327 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
Area estimate from nearby wells: USGS well samples in your county (2000–2016).
Carbonate hardness (alkalinity)
Area estimate103–286 ppm
Typical 225 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2000–2016).
pH
7.1–7.3
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2019).
Total dissolved solids
Area estimate165–502 ppm
Typical 346 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
Area estimate from nearby wells: USGS well samples in your county (2000–2016).
- Coon Rapids adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Coon Rapids, MN
Coon Rapids
Serves all residents · Groundwater (wells) · 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.