Water hardness in Connecticut

Typical Connecticut tap water
53mg/L
3.1gpg
Soft

Population-weighted middle value across 51 Connecticut cities in the dataset

People with hard or very hard water
10%
Hardest
New Britain 162
Softest
Torrington 9

We have hardness numbers for 51 Connecticut cities. Each city page adds the water system's EPA violation record and a softener size for a typical household.

Every Connecticut city on the hardness scale
SoftModerately hardHardVery hard060120180240300360+Bridgeport: 53 mg/LStamford: 53 mg/LNew Haven: 46 mg/LHartford: 16 mg/LWaterbury: 66 mg/LNorwalk: 53 mg/LDanbury: 83 mg/LNew Britain: 162 mg/LWest Hartford: 16 mg/LBristol: 162 mg/LWest Haven: 46 mg/LMilford: 46 mg/LEast Hartford: 16 mg/LMiddletown: 64 mg/LShelton: 52 mg/LManchester: 131 mg/LTorrington: 9 mg/LNaugatuck: 66 mg/LNewington: 16 mg/LNew London: 21 mg/LEast Haven: 46 mg/LWethersfield: 16 mg/LNorth Haven: 46 mg/LAnsonia: 46 mg/LGreenwich: 53 mg/LOrange: 46 mg/LStorrs: 97 mg/LDerby: 49 mg/LWindsor Locks: 61 mg/LBethel: 83 mg/LGroton: 22 mg/LTrumbull Center: 53 mg/LSandy Hook: 53 mg/LRiverside: 53 mg/LLong Hill: 50 mg/LConning Towers-Nautilus Park: 22 mg/LGlastonbury Center: 16 mg/LThompsonville: 61 mg/LCos Cob: 53 mg/LRidgefield: 53 mg/LNew Canaan: 53 mg/LStaples: 53 mg/LOld Greenwich: 53 mg/LRockville: 61 mg/LNorthford: 46 mg/LBranford Center: 46 mg/LCheshire Village: 46 mg/LDaniels Farm: 53 mg/LSherwood Manor: 61 mg/LNoroton: 53 mg/LByram: 53 mg/LBridgeportHartfordDanburyNew BritainSoftMod.HardVery hard060120180240300360+Bridgeport: 53 mg/LStamford: 53 mg/LNew Haven: 46 mg/LHartford: 16 mg/LWaterbury: 66 mg/LNorwalk: 53 mg/LDanbury: 83 mg/LNew Britain: 162 mg/LWest Hartford: 16 mg/LBristol: 162 mg/LWest Haven: 46 mg/LMilford: 46 mg/LEast Hartford: 16 mg/LMiddletown: 64 mg/LShelton: 52 mg/LManchester: 131 mg/LTorrington: 9 mg/LNaugatuck: 66 mg/LNewington: 16 mg/LNew London: 21 mg/LEast Haven: 46 mg/LWethersfield: 16 mg/LNorth Haven: 46 mg/LAnsonia: 46 mg/LGreenwich: 53 mg/LOrange: 46 mg/LStorrs: 97 mg/LDerby: 49 mg/LWindsor Locks: 61 mg/LBethel: 83 mg/LGroton: 22 mg/LTrumbull Center: 53 mg/LSandy Hook: 53 mg/LRiverside: 53 mg/LLong Hill: 50 mg/LConning Towers-Nautilus Park: 22 mg/LGlastonbury Center: 16 mg/LThompsonville: 61 mg/LCos Cob: 53 mg/LRidgefield: 53 mg/LNew Canaan: 53 mg/LStaples: 53 mg/LOld Greenwich: 53 mg/LRockville: 61 mg/LNorthford: 46 mg/LBranford Center: 46 mg/LCheshire Village: 46 mg/LDaniels Farm: 53 mg/LSherwood Manor: 61 mg/LNoroton: 53 mg/LByram: 53 mg/LBridgeport

Dot size follows population. Tap a dot for the city page.

38Soft
10Moderately hard
3Hard
0Very hard

Hardest water in Connecticut

  1. New Britain162
  2. Bristol162
  3. Manchester131
  4. Storrs97
  5. Danbury83
  6. Bethel83
  7. Waterbury66
  8. Naugatuck66

Softest water in Connecticut

  1. Torrington9
  2. Glastonbury Center16
  3. Wethersfield16
  4. Newington16
  5. East Hartford16
  6. West Hartford16
  7. Hartford16
  8. New London21

All cities in Connecticut

Citymg/LgpgClassDataEPA health violations
Bridgeport533.1SoftUtility report0
Stamford533.1SoftUtility report0
New Haven462.7SoftUtility report0
Hartford160.9SoftUtility report0
Waterbury663.9Moderately hardUtility report0
Norwalk533.1SoftUtility report0
Danbury834.9Moderately hardUtility report1
New Britain1629.5HardUtility report0
West Hartford160.9SoftUtility report0
Bristol1629.5HardUtility report1
West Haven462.7SoftUtility report0
Milford462.7SoftUtility report0
East Hartford160.9SoftUtility report0
Middletown643.8Moderately hardUtility report0
Shelton523.0SoftUtility report0
Manchester1317.7HardUtility report0
Torrington90.6SoftUtility report1
Naugatuck663.9Moderately hardUtility report0
Newington160.9SoftUtility report0
New London211.2SoftUtility report0
East Haven462.7SoftUtility report0
Wethersfield160.9SoftUtility report0
North Haven462.7SoftUtility report0
Ansonia462.7SoftUtility report0
Greenwich533.1SoftUtility report0
Orange462.7SoftUtility report0
Storrs975.7Moderately hardCalculated from utility data–
Derby492.9SoftUtility report0
Windsor Locks613.6Moderately hardUtility report0
Bethel834.9Moderately hardUtility report1
Groton221.3SoftUtility report0
Trumbull Center533.1SoftUtility report0
Sandy Hook533.1SoftUtility report0
Riverside533.1SoftUtility report0
Long Hill502.9SoftUtility report0
Conning Towers-Nautilus Park221.3SoftUtility report0
Glastonbury Center160.9SoftUtility report0
Thompsonville613.6Moderately hardUtility report0
Cos Cob533.1SoftUtility report0
Ridgefield533.1SoftUtility report0
New Canaan533.1SoftUtility report0
Staples533.1SoftUtility report0
Old Greenwich533.1SoftUtility report0
Rockville613.6Moderately hardUtility report0
Northford462.7SoftUtility report0
Branford Center462.7SoftUtility report0
Cheshire Village462.7SoftUtility report0
Daniels Farm533.1SoftUtility report0
Sherwood Manor613.6Moderately hardUtility report0
Noroton533.1SoftUtility report0
Byram533.1SoftUtility report0

Questions

Is Connecticut water hard?

The typical Connecticut resident gets about 53 mg/L (3.1 gpg), which is soft. About 10% of people in the cities we track have hard or very hard water.

Which city in Connecticut has the hardest water?

Among 51 cities with pages here, New Britain is highest at 162 mg/L.

Which city in Connecticut has the softest water?

Torrington, at 9 mg/L.

Other states

Hardness data: TapWaterData US Water Hardness, CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.