Warren, MA tap water
Supplied by Warren Water District. Here's what its water means for your fish.
Disinfectant
Not confirmed
We couldn't confirm how your water is disinfected. US utilities use chlorine or chloramine, and chloramine doesn't gas off when water sits out.
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 (2014–2017).
Nitrate (NO₃)
2.4 ppm (Low)
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2013–2019).
Water chemistry
General hardness
Area estimate34–170 ppm
Typical 83 ppm
Moderately soft to medium. Suits most community fish and plants.
Area estimate from nearby wells: USGS well samples in your county (2002–2019).
Carbonate hardness (alkalinity)
Area estimate24–93 ppm
Typical 58 ppm
Moderate buffering. pH should stay fairly steady.
Area estimate from nearby wells: USGS well samples in your county (2002–2019).
pH
Area estimate6.2–8.2
Typical 7.2
Most community fish do well here. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2002–2019).
Total dissolved solids
Area estimate81–238 ppm
Typical 131 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 (2002–2019).
- Warren Water District adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Warren, MA
Warren Water District
Serves 93% of residents · Groundwater (wells) · Disinfectant not listed
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.