Connecticut Water Quality Reports
Comprehensive water quality data for 159 cities across Connecticut. View EPA-verified contaminant levels and get filter recommendations.
159
Cities
1
Safe
36
Monitor
35
At Risk
87
No Test Data
Water Quality by County
Explore aggregated water quality scores across Connecticut counties. Scores are calculated based on EPA data and weighted by population.
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Data from 72 cities serving 0 people across 0 counties.
Common Contaminants in Connecticut
69 cities in Connecticut have at least one contaminant above EPA health guidelines.
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Upload my testCities in Connecticut
Ansonia
People Served419K
166 results on file
Above Guidelines4
View Report โ
Cheshire Village
People Served419K
166 results on file
Above Guidelines4
View Report โ
Derby
People Served419K
166 results on file
Above Guidelines4
View Report โ
East Haven
People Served419K
166 results on file
Above Guidelines4
View Report โ
Milford
People Served419K
166 results on file
Above Guidelines4
View Report โ
New Haven
People Served419K
166 results on file
Above Guidelines4
View Report โ
North Haven
People Served419K
166 results on file
Above Guidelines4
View Report โ
Orange
People Served419K
166 results on file
Above Guidelines4
View Report โ
West Haven
People Served419K
166 results on file
Above Guidelines4
View Report โ
Bloomfield
People Served391K
166 results on file
Above Guidelines3
View Report โ
East Hartford
People Served391K
166 results on file
Above Guidelines3
View Report โ
Hartford
People Served391K
166 results on file
Above Guidelines3
View Report โ
Newington
People Served391K
166 results on file
Above Guidelines3
View Report โ
Rocky Hill
People Served391K
166 results on file
Above Guidelines3
View Report โ
West Hartford
People Served391K
166 results on file
Above Guidelines3
View Report โ
Wethersfield
People Served391K
166 results on file
Above Guidelines3
View Report โ
Bridgeport
People Served352K
153 results on file
Above Guidelines4
View Report โ
Greenwich
People Served352K
153 results on file
Above Guidelines4
View Report โ
New Canaan
People Served352K
153 results on file
Above Guidelines4
View Report โ
Newtown
People Served352K
153 results on file
Above Guidelines4
View Report โ
Ridgefield
People Served352K
153 results on file
Above Guidelines4
View Report โ
Shelton
People Served352K
153 results on file
Above Guidelines4
View Report โ
Stamford
People Served352K
153 results on file
Above Guidelines4
View Report โ
Trumbull
People Served352K
153 results on file
Above Guidelines4
View Report โ
Westport Village
People Served352K
153 results on file
Above Guidelines4
View Report โ
Waterbury
People Served107K
146 results on file
Above Guidelines3
View Report โ
Enfield
People Served99K
156 results on file
Above Guidelines4
View Report โ
Tolland
People Served99K
156 results on file
Above Guidelines4
View Report โ
Vernon
People Served99K
156 results on file
Above Guidelines4
View Report โ
Windsor Locks
People Served99K
156 results on file
Above Guidelines4
View Report โ
New Britain
People Served74K
155 results on file
Above Guidelines2
View Report โ
Danbury
People Served62K
160 results on file
Above Guidelines3
View Report โ
Meriden
People Served58K
155 results on file
Above Guidelines4
View Report โ
Bristol
People Served52K
154 results on file
Above Guidelines3
View Report โ
Manchester
People Served51K
160 results on file
Above Guidelines4
View Report โ
Southington
People Served43K
154 results on file
Above Guidelines5
View Report โ
Middlefield
People Served41K
164 results on file
Above Guidelines2
View Report โ
Middletown
People Served41K
164 results on file
Above Guidelines2
View Report โ
Norwalk
People Served40K
23 results on file
Above Guidelines2
View Report โ
Torrington
People Served38K
157 results on file
Above Guidelines2
View Report โ
Wallingford
People Served37K
149 results on file
Above Guidelines4
View Report โ
Montville
People Served36K
23 results on file
Above Guidelines3
View Report โ
Norwich
People Served36K
23 results on file
Above Guidelines3
View Report โ
Clinton
People Served34K
164 results on file
Above Guidelines4
View Report โ
Groton
People Served30K
145 results on file
Above Guidelines1
View Report โ
New London
People Served28K
145 results on file
Above Guidelines1
View Report โ
Naugatuck
People Served23K
151 results on file
Above Guidelines2
View Report โ
Windham
People Served21K
153 results on file
Above Guidelines2
View Report โ
Hazardville
People Served19K
183 results on file
Above Guidelines4
View Report โ
Somers
People Served19K
183 results on file
Above Guidelines4
View Report โ
Plainville
People Served18K
162 results on file
Above Guidelines4
View Report โ
Waterford
People Served17K
30 results on file
Above Guidelines0
View Report โ
East Lyme
People Served15K
157 results on file
Above Guidelines2
View Report โ
Granby
People Served15K
23 results on file
Above Guidelines2
View Report โ
Cromwell
People Served14K
151 results on file
Above Guidelines4
View Report โ
Seymour
People Served13K
151 results on file
Above Guidelines5
View Report โ
New Milford
People Served12K
152 results on file
Above Guidelines5
View Report โ
Ledyard
People Served11K
146 results on file
Above Guidelines2
View Report โ
Stonington
People Served11K
146 results on file
Above Guidelines2
View Report โ
Watertown
People Served10K
38 results on file
Above Guidelines3
View Report โ
Bethel
People Served10K
152 results on file
Above Guidelines4
View Report โ
Kensington
People Served8K
39 results on file
Above Guidelines2
View Report โ
Middlebury
People Served7K
23 results on file
Above Guidelines1
View Report โ
Burlington
People Served6K
23 results on file
Above Guidelines2
View Report โ
Berlin
People Served5K
148 results on file
Above Guidelines2
View Report โ
Chester
People Served5K
162 results on file
Above Guidelines3
View Report โ
Essex Village
People Served5K
162 results on file
Above Guidelines3
View Report โ
Portland
People Served5K
148 results on file
Above Guidelines0
View Report โ
Thomaston
People Served4K
146 results on file
Above Guidelines0
View Report โ
Old Lyme
People Served3K
125 results on file
Above Guidelines6
View Report โ
Wolcott
People Served3K
17 results on file
Above Guidelines3
View Report โ
Durham
People Served2K
20 contaminants listed, record not matched to an EPA water system
Above Guidelines0
View Report โ
Tariffville
People Served1K
7 results on file
Above Guidelines1
View Report โ
Baltic
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Blue Hills
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Bolton
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Branford Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Broad Brook
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Brookfield Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Byram
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Chester Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Coleytown
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Compo
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Conning Towers-Nautilus Park
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Cos Cob
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Daniels Farm
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Darien Downtown
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Dayville
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Deep River Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
East Village
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Fairfield University
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Fenwick
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Gales Ferry
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Georgetown
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Glastonbury Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Glenville
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Greens Farms
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Groton Long Point
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Guilford Center
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Indian Field
People Served0K
No contaminant results on file
Above Guidelines0
View Report โ
Showing top 100 of 159 cities by population.
Use the search box above to find any city in Connecticut.
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