Mequon, WI tap water
Supplied mostly by Mequon Water Utility, 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2018).
Nitrate (NO₃)
Supplier's figure0.2–1.8 ppm (Low)
Typical 1.3 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Milwaukee Waterworks, which supplies Mequon Water Utility; EPA monitoring data (2012–2019).
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 figure98–150 ppm
Typical 104 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies yours: North Shore Water Commission and Milwaukee Waterworks, which supplies Mequon Water Utility; EPA monitoring data (2012–2019).
pH
Supplier's figure7.6–7.9
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Milwaukee Waterworks, which supplies Mequon Water Utility; EPA monitoring data (2012–2018).
- Mequon Water Utility and Concordia University add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Mequon, WI
Mequon Water Utility
Serves 44% of residents · Buys water from North Shore Water Commission · Chloramine
Concordia University
Serves 6% of 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.