Mount Pleasant, SC tap water
Supplied by Mt Pleasant Water Works (1010002). 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)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2018).
Nitrate (NO₃)
Up to 0.5 ppm (Low)
Typical 0.1 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Supplier's figure54 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
From the utility that supplies yours: Charleston Water System, which supplies Mt Pleasant Water Works (1010002) (2025).
Carbonate hardness (alkalinity)
Supplier's figure29 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From the utility that supplies yours: Charleston Water System, which supplies Mt Pleasant Water Works (1010002) (2025).
pH
Supplier's figure8–8.2
Typical 8.1
Alkaline. Many utilities raise pH to protect pipes. Stability matters more than the exact number.
From the utility that supplies yours: Charleston Water System, which supplies Mt Pleasant Water Works (1010002) (2012–2019).
Total dissolved solids
Supplier's figure100 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: Charleston Water System, which supplies Mt Pleasant Water Works (1010002) (2025).
- Mt Pleasant Water Works (1010002) adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Mount Pleasant, SC
Mt Pleasant Water Works (1010002)
Serves 96% of residents · Buys water from Charleston Water System (SC1010001) · 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.