Baldwin, WI tap water
Supplied by Baldwin Waterworks. Here's what its water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
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 (2014–2017).
Nitrate (NO₃)
8.9–11 ppm (Low)
Typical 10 ppm
Water changes can't take your tank's nitrate below this level.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate181–285 ppm
Typical 208 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your county (2002–2018).
Carbonate hardness (alkalinity)
160–190 ppm
Typical 175 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data (2017).
pH
7.6–7.7
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2017).
Total dissolved solids
Area estimate185–318 ppm
Typical 224 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 (2002–2018).
Who supplies Baldwin, WI
Baldwin Waterworks
Serves 96% of residents · Groundwater (wells) · Disinfectant not listed
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.