Charlestown, MD tap water
Supplied by Town of Charlestown. Here's what its water means for your fish.
Disinfectant
Chlorine
Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.
Safety for fish and shrimp
Nitrate (NO₃)
Not detected (Low)
Not detected in testing, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate2–240 ppm
Typical 31 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
Area estimate from nearby wells: USGS well samples in your county (2001–2022).
Carbonate hardness (alkalinity)
Area estimate4–145 ppm
Typical 50 ppm
Moderate buffering. pH should stay fairly steady.
Area estimate from nearby wells: USGS well samples in your county (2001–2022).
pH
Area estimate4.5–6.8
Typical 5.6
Acidic. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2001–2022).
Total dissolved solids
Area estimate33–2278 ppm
Typical 193 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 (2001–2022).
- Town of Charlestown adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Charlestown, MD
Town of Charlestown
Serves 74% of residents · Groundwater (wells) · 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.