Mills, WY tap water
Supplied by City of Mills. 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012).
Nitrate (NO₃)
Area estimate6.2–48 ppm (Worth knowing)
Typical 22 ppm
High for well water. Water changes can't take your tank's nitrate below this level.
Area estimate from nearby wells: USGS well samples in your county (2001–2018).
Water chemistry
General hardness
Area estimate17–889 ppm
Typical 192 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your state (2000–2023).
Carbonate hardness (alkalinity)
Area estimate116–489 ppm
Typical 231 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your state (2000–2023).
pH
Area estimate7–7.8
Typical 7.3
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2001–2018).
Total dissolved solids
Area estimate147–2310 ppm
Typical 457 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 state (2000–2023).
- City of Mills adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Mills, WY
City of Mills
Serves 74% of residents · Groundwater fed by surface water · 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.