Mandeville, LA tap water
Supplied mostly by City of Mandeville Water Supply, 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
Nitrate (NO₃)
Area estimate0.1–0.5 ppm (Low)
Typical 0.2 ppm
Low, so water changes lower your tank's nitrate well.
Area estimate from nearby wells: USGS well samples in your county (2001).
Water chemistry
General hardness
Area estimate2–26 ppm
Typical 7 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
Area estimate from nearby wells: USGS well samples in your county (2001–2015).
Carbonate hardness (alkalinity)
127–167 ppm
Typical 134 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data, measured before treatment (2013–2019).
pH
8.3–8.9
Typical 8.4
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From EPA monitoring data, measured before treatment (2013–2019).
Total dissolved solids
Area estimate18–350 ppm
Typical 160 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 (2001–2015).
Who supplies Mandeville, LA
City of Mandeville Water Supply
Serves 87% of residents · Groundwater (wells) · Chloramine
Beau Chene Water System
Serves 8% 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.