Mount Vernon, MO tap water
Supplied by Mount Vernon PWS. 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 estimate4.3–30 ppm (High)
Typical 27 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 (2000–2007).
Water chemistry
General hardness
Area estimate133–277 ppm
Typical 172 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
Area estimate from nearby wells: USGS well samples in your county (2000–2007).
Carbonate hardness (alkalinity)
Area estimate124–278 ppm
Typical 195 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2000–2007).
pH
7.7–7.9
Typical 7.8
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2013–2019).
Total dissolved solids
Area estimate71–309 ppm
Typical 151 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 (2000–2007).
Who supplies Mount Vernon, MO
Mount Vernon PWS
Serves 93% 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.