
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 scale | Disinfectant | Sources | Ask Aqua | ||
|---|---|---|---|---|---|
Manchester |
15 gpg250 ppm, very hard | SoftSlightly hardModerately hardHardVery hardVery hard 15 gpg |
– | Hardness | |
Bridgeport No source linked
|
10 gpg168 ppm, hard | SoftSlightly hardModerately hardHardVery hardHard 10 gpg |
Chloramine | Disinfectant | |
Milford No source linked
|
10 gpg166 ppm, hard | SoftSlightly hardModerately hardHardVery hardHard 10 gpg |
– | ||
Torrington No source linked
|
10 gpg177 ppm, hard | SoftSlightly hardModerately hardHardVery hardHard 10 gpg |
– | ||
Williamantic No source linked
|
9.0 gpg164 ppm, hard | SoftSlightly hardModerately hardHardVery hardHard 9.0 gpg |
– | ||
Danbury No source linked
|
6.0 gpg102 ppm, moderately hard | SoftSlightly hardModerately hardHardVery hardModerately hard 6.0 gpg |
– | ||
Norwalk No source linked
|
3.3 gpg55 ppm, slightly hard | SoftSlightly hardModerately hardHardVery hardSlightly hard 3.3 gpg |
– | ||
South Windsor No source linked
|
1.0 gpg17 ppm, slightly hard | SoftSlightly hardModerately hardHardVery hardSlightly hard 1.0 gpg |
– | ||
East Hartford No source linked
|
0.9 gpg15 ppm, soft | SoftSlightly hardModerately hardHardVery hardSoft 0.9 gpg |
– | ||
Hartford No source linked
|
0.9 gpg15 ppm, soft | SoftSlightly hardModerately hardHardVery hardSoft 0.9 gpg |
Chloramine | Disinfectant | |
West Hartford No source linked
|
0.9 gpg15 ppm, soft | SoftSlightly hardModerately hardHardVery hardSoft 0.9 gpg |
– | ||
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.




