Mountain Lake Park, MD tap water
Supplied mostly by Town of Mountain Lake Park, plus 1 other utility. Here's what the 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)
Up to 1.1 ppm (Low)
Typical 1.1 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate11–372 ppm
Typical 72 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)
20–21 ppm
Typical 21 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From EPA monitoring data, measured before treatment (2013–2019).
pH
6.7–6.8
Typical 6.8
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2013–2014).
Total dissolved solids
Area estimate41–505 ppm
Typical 113 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).
- Town of Oakland adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Mountain Lake Park, MD
Town of Mountain Lake Park
Serves 92% of residents · Groundwater (wells) · Chlorine
Town of Oakland
Serves 8% of residents · Lake or river water · 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.