Robertsville, NJ tap water
Supplied by Marlboro Township Water Utility Division. 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
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From EPA monitoring data (2012–2019).
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 figure32–300 ppm
Typical 157 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
From the utility that supplies yours: Middlesex Water Company, which supplies Marlboro Township Water Utility Division (2024).
Carbonate hardness (alkalinity)
47–54 ppm
Typical 49 ppm
Moderate buffering. pH should stay fairly steady.
From EPA monitoring data (2012–2019).
pH
6.8–7
Typical 6.9
Most community fish do well here. Stable water matters more than the exact number.
From EPA monitoring data (2012–2019).
- Marlboro Township Water Utility Division adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Marlboro Township Water Utility Division softens its water at the plant, so it may be softer than the local groundwater.
Who supplies Robertsville, NJ
Marlboro Township Water Utility Division
Serves 79% of residents · Buys water from Middlesex Water Company · 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.
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.