Matawan, NJ tap water
Supplied by Matawan Borough Water de. 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)
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
Supplier's figure60–140 ppm
Typical 140 ppm
Moderately soft to medium. Suits most community fish and plants.
From the utility that supplies yours: New Jersey American Water – Coastal North, which supplies Matawan Borough Water de (2025).
Carbonate hardness (alkalinity)
32–36 ppm
Typical 34 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
From EPA monitoring data (2012–2019).
pH
7.5–7.6
Typical 7.5
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2019).
- Matawan Borough Water de adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Matawan Borough Water de softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Matawan, NJ
Matawan Borough Water de
Serves 99% of residents · Buys water from New Jersey American Water – Coastal North · 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.