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Connecticut Water Quality
2,332 public water systems serving 2,886,005 people.
Water Systems
2,332
Total Violations
206,662
Violation Rate
94%
PFAS Detection
63.5%
40 of 63 tested
Largest Water Systems
REGIONAL WATER AUTHORITY
NEW HAVEN, CT · 418,900 served
METROPOLITAN DISTRICT COMMISSION
HARTFORD, CT · 390,887 served
AQUARION-EASTERN FAIRFIELD COUNTY
SHELTON, CT · 351,756 served
AQUARION-STAMFORD
SHELTON, CT · 119,214 served
WATERBURY WATER DEPARTMENT
WATERBURY, CT · 107,271 served
CTWC - NORTHERN REG-WESTERN SYSTEM
CLINTON, CT · 101,313 served
NEW BRITAIN WATER DEPARTMENT
NEW BRITAIN, CT · 73,534 served
DANBURY WATER DEPARTMENT
DANBURY, CT · 62,055 served
MERIDEN WATER DIVISION
MERIDEN, CT · 58,441 served
AQUARION-GREENWICH
SHELTON, CT · 53,297 served
BRISTOL WATER DEPARTMENT
BRISTOL, CT · 52,079 served
MANCHESTER WATER DEPARTMENT
MANCHESTER, CT · 51,198 served
SOUTHINGTON WATER DEPARTMENT
SOUTHINGTON, CT · 43,069 served
SOUTH NORWALK ELECTRIC & WATER
WILTON, CT · 42,000 served
MIDDLETOWN WATER DEPARTMENT
MIDDLETOWN, CT · 41,019 served
NORWALK FIRST TAXING DISTRICT
NORWALK, CT · 40,256 served
TORRINGTON WATER COMPANY
SHELTON, CT · 37,915 served
WALLINGFORD WATER DEPARTMENT
WALLINGFORD, CT · 37,267 served
NORWICH PUBLIC UTILITIES
NORWICH, CT · 36,163 served
CTWC - SHORELINE REGION-GUILFORD SYSTEM
CLINTON, CT · 33,975 served
Most Violations
#1 27 MAPLE DRIVE MONROE
5,163 #2 GARDEN LANE APARTMENTS BANTAM
1,470 #3 FAWN RIDGE ASSOCIATION INC. CHARLTON
1,282 #4 OAKRIDGE VILLAGE FOREST HILLS
1,162 #5 125-131 BRADLEY ROAD - WOODBRIDGE WOODBRIDGE
1,147 #6 YESHIVA OF WATERBURY-DURHAM CAMPUS WATERBURY
1,081 #7 4 WEST GRANBY ROAD GRANBY
1,032 #8 SOUTHINGTON WATER DEPARTMENT SOUTHINGTON
1,028 #9 LYME ACADEMY APARTMENTS,LLC TORRINGTON
935 #10 THOMPSON HILL WATER CO - PAULA LANE DIV THOMPSON
885 #11 OAKDALE MANOR WATER ASSOCIATION SOUTHBURY
856 #12 890 BOSTON TURNPIKE TOLLAND
855 #13 31 OLD ROUTE SEVEN BETHEL
794 #14 THE LEARNING DEN WEST HARTFORD
748 #15 CADENCE ACADEMY CANTON
738 Counties in Connecticut
Hartford
219 systems · 836,032 served
· 20,244 violations
Fairfield
336 systems · 779,265 served
· 42,084 violations
New Haven
212 systems · 723,250 served
· 17,543 violations
New London
396 systems · 209,068 served
· 34,737 violations
Litchfield
345 systems · 117,396 served
· 27,780 violations
Middlesex
276 systems · 97,390 served
· 25,593 violations
Windham
255 systems · 63,884 served
· 21,628 violations
Tolland
293 systems · 59,720 served
· 17,053 violations