Mayo, MD tap water
Part of Mayo is supplied by Mayo Center and Apartments. Here's what its water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how utility water here is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
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 estimate13–188 ppm
Typical 114 ppm
Moderately soft to medium. Suits most community fish and plants.
Area estimate from nearby wells: USGS well samples in your county (2000–2022).
Carbonate hardness (alkalinity)
Area estimate3–178 ppm
Typical 121 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
Area estimate from nearby wells: USGS well samples in your county (2000–2022).
pH
7.2
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2013).
Total dissolved solids
Area estimate42–336 ppm
Typical 168 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 (2000–2022).
Who supplies Mayo, MD
Mayo Center and Apartments
Serves 7% of residents · Groundwater (wells) · Disinfectant not listed
We couldn't fully map which utility serves Mayo. These numbers come from the utility we matched, which serves about 7% of residents.
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.