Greenfield, WI tap water
Part of Greenfield is supplied by Greendale Waterworks. Here's what its water means for your fish.
Disinfectant
Chloramine
Utility water here 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 figure1.3–1.8 ppm (Low)
Typical 1.3 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies it: Milwaukee Waterworks, which supplies Greendale Waterworks (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 figure98–103 ppm
Typical 99 ppm
Moderate buffering. pH should stay fairly steady.
From the utility that supplies it: Milwaukee Waterworks, which supplies Greendale Waterworks (2012–2017).
pH
Supplier's figure7.6–7.7
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies it: Milwaukee Waterworks, which supplies Greendale Waterworks (2012–2015).
- Greendale Waterworks adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Greenfield, WI
Greendale Waterworks
Serves 9% of residents · Buys water from Milwaukee Waterworks · Chloramine
We couldn't fully map which utility serves Greenfield. These numbers come from the utility we matched, which serves about 9% of residents.
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.