Shoal & Stem
Tap water lookup

Wethersfield, CT tap water

Supplied by Metropolitan District Commission. Here's what its water means for your fish.

Disinfectant

Chlorine

Your water is treated with chlorine. It slowly gases off from standing water, and any water conditioner removes it.

Safety for fish and shrimp

Nitrite (NO₂)

0.07 ppm (Low)

Essentially none, so any nitrite in your tank comes from the tank itself.

Published by your utility: Metropolitan District Commission's 2025 water quality report.

Nitrate (NO₃)

Up to 0.2 ppm (Low)

Typical 0.2 ppm

Low, so water changes lower your tank's nitrate well.

Published by your utility: Metropolitan District Commission's 2025 water quality report.

Chlorine or chloramine at the tap

0–1 ppm

Typical 0.5 ppm

At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.

Published by your utility: Metropolitan District Commission's 2025 water quality report.

Water chemistry

General hardness

15–17 ppm

Typical 15 ppm

Soft. Good for tetras, rasboras and most shrimp. Livebearers, snails and African cichlids prefer harder water.

Published by your utility: Metropolitan District Commission's website.

Carbonate hardness (alkalinity)

4–22 ppm

Typical 13 ppm

Little buffering. pH can drop quickly between water changes, especially with CO₂ or an older tank.

Published by your utility: Metropolitan District Commission's 2025 water quality report.

pH

7.1–8

Typical 7.4

Most community fish do well here. Stable water matters more than the exact number.

Published by your utility: Metropolitan District Commission's 2025 water quality report.

  • Metropolitan District Commission adds phosphate to protect pipes. It can feed algae in tanks without much plant growth.

Who supplies Wethersfield, CT

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.

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