Pawcatuck, CT tap water
Part of Pawcatuck is supplied by Mashantucket Pequot Water System. Here's what its water means for your fish.
Disinfectant
Chlorine
Utility water here is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.
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)
1.9–5.7 ppm (Low)
Typical 3.8 ppm
Low, so water changes lower your tank's nitrate well.
From EPA monitoring data (2012–2019).
Water chemistry
General hardness
Area estimate23–163 ppm
Typical 43 ppm
Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.
Area estimate from nearby wells: USGS well samples in your county (2000–2017).
Carbonate hardness (alkalinity)
Area estimate5–40 ppm
Typical 16 ppm
Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.
Area estimate from nearby wells: USGS well samples in your county (2000–2017).
pH
Area estimate5.2–6.9
Typical 6
Acidic. Stable water matters more than the exact number.
Area estimate from nearby wells: USGS well samples in your county (2000–2017).
Total dissolved solids
Area estimate48–535 ppm
Typical 164 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 (2000–2017).
- Mashantucket Pequot Water System adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.
Who supplies Pawcatuck, CT
Mashantucket Pequot Water System
Serves 23% of residents · Groundwater fed by surface water · Chlorine
We couldn't fully map which utility serves Pawcatuck. These numbers come from the utility we matched, which serves about 23% of residents.
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.