Kemah, TX tap water
Supplied by Galveston County Wcid 12. 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
Nitrate (NO₃)
Supplier's figure0.4–3.9 ppm (Low)
Typical 2.3 ppm
Low, so water changes lower your tank's nitrate well.
From the utility that supplies yours: Gulf Coast Water Authority TX City and City of League City, which supplies Galveston County Wcid 12 (2012–2025).
Water chemistry
General hardness
Supplier's figure124 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: City of League City, which supplies Galveston County Wcid 12 (2025).
Carbonate hardness (alkalinity)
125–187 ppm
Typical 156 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data (2014–2017).
pH
Supplier's figure7.1–8.1
Typical 7.6
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Gulf Coast Water Authority TX City and City of League City, which supplies Galveston County Wcid 12 (2012–2025).
Total dissolved solids
Supplier's figure240 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 League City, which supplies Galveston County Wcid 12 (2025).
- Galveston County Wcid 12 adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Galveston County Wcid 12 softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Kemah, TX
Galveston County Wcid 12
Serves 78% of residents · Buys water from Gulf Coast Water Authority TX City · 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.