Nassau Bay, TX tap water
Supplied by City of Nassau Bay. Here's what its 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)
0.03–0.05 ppm (Low)
Typical 0.04 ppm
Essentially none, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2015).
Nitrate (NO₃)
1.4–2.1 ppm (Low)
Typical 1.7 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Supplier's figure43–183 ppm
Typical 118 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: City of Houston, which supplies City of Nassau Bay (2024).
Carbonate hardness (alkalinity)
94 ppm
Moderate buffering. pH should stay fairly steady.
From EPA monitoring data (2014–2017).
pH
Supplier's figure6.7–9
Typical 8
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From the utility that supplies yours: City of Houston and City of Pasadena, which supplies City of Nassau Bay (2018–2024).
Total dissolved solids
Supplier's figure144–321 ppm
Typical 203 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 Houston, which supplies City of Nassau Bay (2024).
- City of Nassau Bay softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Nassau Bay, TX
City of Nassau Bay
Serves all residents · Buys water from Clear Lake City Water Authority · 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.