Brushy Creek, TX tap water
Supplied mostly by Brushy Creek MUD, plus 1 other utility. Here's what the water means for your fish.
Disinfectant
Chloramine
Your water is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees a little ammonia. Some utilities switch to plain chlorine for a few weeks a year.
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 (2013).
Nitrate (NO₃)
1.1–7.2 ppm (Low)
Typical 2.3 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data; City of Round Rock, which supplies Fern Bluff MUD (2012–2025).
Water chemistry
General hardness
Supplier's figure100–358 ppm
Typical 258 ppm
Hard. Ideal for livebearers and African cichlids. Soft-water species may struggle to breed.
From the utility that supplies yours: City of Round Rock, which supplies Fern Bluff MUD (2025).
Carbonate hardness (alkalinity)
68–204 ppm
Typical 179 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data; City of Round Rock, which supplies Fern Bluff MUD (2012–2025).
pH
7–8
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data; City of Round Rock, which supplies Fern Bluff MUD (2012–2025).
Total dissolved solids
Supplier's figure302 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
From the utility that supplies yours: City of Round Rock, which supplies Fern Bluff MUD (2025).
Who supplies Brushy Creek, TX
Brushy Creek MUD
Serves 76% of residents · Lake or river water · Chloramine
Fern Bluff MUD
Serves 30% of residents · Buys water from City of Round Rock · Chloramine
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.
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Compiled by Shoal & Stem from public records. Free to cite with a link.