Lake Hiawatha, NJ tap water
Supplied by Parsippany-Troy Hills Water Department. 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)
4.4 ppm (Low)
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2013–2015).
Water chemistry
General hardness
Supplier's figure62–103 ppm
Typical 83 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: Jersey City MUA, which supplies Parsippany-Troy Hills Water Department (2022).
Carbonate hardness (alkalinity)
142–192 ppm
Typical 172 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From EPA monitoring data (2014–2019).
pH
7.2–7.7
Typical 7.4
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2014–2019).
Total dissolved solids
Supplier's figure173–332 ppm
Typical 253 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: Jersey City MUA, which supplies Parsippany-Troy Hills Water Department (2022).
- Parsippany-Troy Hills Water Department adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Parsippany-Troy Hills Water Department softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Lake Hiawatha, NJ
Parsippany-Troy Hills Water Department
Serves 92% of residents · Buys water from Jersey City MUA · 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.