Aquatell

Connecticut

The 11 hardness figures we’ve verified run from 0.9 to 15 grains per gallon, with a median of 6.0; 45% are hard or very hard.

How the 11 figures spread across the bands

  • Soft 3
  • Slightly hard 2
  • Moderately hard 1
  • Hard 4
  • Very hard 1
Hardness
6.0 gpg medianAverage 6.1 gpg (104 ppm), from 0.9 to 15. Each published figure counts once in the average, median and spread; a figure published as a range is shown as its range and isn't averaged.
Coverage
14 places14 listings as published
Disinfectant
4 of 5use chloramine; 1 use chlorine

Every place we have

Sources are each city’s water quality report or its utility. Gather the listings up by place or by the water system that serves them, or see every listing as published; open a group to see what’s in it.

14 places

On the scaleDisinfectantSourcesAsk Aqua
Manchester
15 gpg250 ppm, very hard – Hardness
Bridgeport
No source linked
  • The page it came from links no primary source for this figure.
10 gpg168 ppm, hard Chloramine Disinfectant
Milford
No source linked
  • The page it came from links no primary source for this figure.
10 gpg166 ppm, hard –
Torrington
No source linked
  • The page it came from links no primary source for this figure.
10 gpg177 ppm, hard –
Williamantic
No source linked
  • The page it came from links no primary source for this figure.
9.0 gpg164 ppm, hard –
Danbury
No source linked
  • The page it came from links no primary source for this figure.
6.0 gpg102 ppm, moderately hard –
Norwalk
No source linked
  • The page it came from links no primary source for this figure.
3.3 gpg55 ppm, slightly hard –
South Windsor
No source linked
  • The page it came from links no primary source for this figure.
1.0 gpg17 ppm, slightly hard –
East Hartford
No source linked
  • The page it came from links no primary source for this figure.
0.9 gpg15 ppm, soft –
Hartford
No source linked
  • The page it came from links no primary source for this figure.
0.9 gpg15 ppm, soft Chloramine Disinfectant
West Hartford
No source linked
  • The page it came from links no primary source for this figure.
0.9 gpg15 ppm, soft –
New Haven
– Chloramine Disinfectant
Stamford
– Chloramine Disinfectant
Waterbury
– Chlorine Disinfectant

Missing your city? Aquatell researches cities on request from the utility’s own reports, usually within a week. A note on a figure says what we found when we checked it: units that didn’t agree, another page with a different figure, a range.

What to do about it

Hard water

Above about 3.5 grains per gallon, scale builds in water heaters, fixtures and appliances. A softener sized for your hardness and household removes it for the whole house.

Chlorine or chloramine

Standard carbon removes chlorine’s taste and smell. Chloramine lasts longer in the pipes and needs catalytic carbon to remove it.

Not sure what you need?

Aqua knows these figures and Aquatell’s treatment charts, and can size a system for your home.

Softeners for Connecticut’s water