Hornsby Bend, TX tap water
Supplied mostly by Austins Colony, 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 0.33 ppm (Low)
Typically not detected
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2015).
Nitrate (NO₃)
0.1–2.3 ppm (Low)
Typical 0.8 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate265–386 ppm
Typical 317 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
Area estimate from nearby wells: USGS well samples in your county (2000–2022).
Carbonate hardness (alkalinity)
152–321 ppm
Typical 254 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data; Austins Colony, which supplies Kennedy Ridge WSC (2012–2019).
pH
7.3–8.1
Typical 8
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data; City of Pflugerville, which supplies Manville WSC; Austins Colony, which supplies Kennedy Ridge WSC (2012–2018).
Total dissolved solids
Area estimate287–483 ppm
Typical 354 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 (2000–2022).
- Manville WSC adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Hornsby Bend, TX
Austins Colony
Serves 76% of residents · Groundwater (wells) · Chlorine
Manville WSC
Serves 12% of residents · Buys water from City of Pflugerville · Chloramine
Kennedy Ridge WSC
Serves 10% of residents · Buys water from Austins Colony · 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.