Sam Rayburn, TX tap water
Supplied mostly by Rayburn Country MUD, plus 2 other utilities. 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
Nitrite (NO₂)
Up to 0.07 ppm (Low)
Typical 0.03 ppm
Essentially none, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2015).
Nitrate (NO₃)
Up to 0.4 ppm (Low)
Typical 0.4 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate8–69 ppm
Typical 66 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 (2005).
Carbonate hardness (alkalinity)
88–349 ppm
Typical 315 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data (2013–2019).
pH
Area estimate5.6–8
Typical 7
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 (2005).
Total dissolved solids
Area estimate44–188 ppm
Typical 86 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 (2005).
- Mulberry Water Supply Brookeland Fwsd adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Sam Rayburn, TX
Rayburn Country MUD
Serves 77% of residents · Groundwater (wells) · Chloramine
Forest Hills Water Supply
Serves 9% of residents · Groundwater (wells) · Chlorine
Mulberry Water Supply Brookeland Fwsd
Serves 7% 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.