PFAS contamination data for 10,856 water systems in Connecticut, serving 3,153,600 people.
PFOA MCL: 12 ppt(EPA: 4 ppt)
PFOS MCL: 12 ppt(EPA: 4 ppt)
CT action levels: PFOA 12 ppt, PFOS 12 ppt, PFHxS 16 ppt, PFNA 11 ppt, PFDA 10 ppt. New 2026 PFAS product restrictions taking effect.
Connecticut has action levels stricter than EPA for some compounds. New 2026 law restricts PFAS in consumer products.
Serious SDWA violator: CHURCH OF JESUS CHRIST OF LATTER DAY SAI, Norwich, CT
PWS ID: CT1040054. County: New London
2026-05-11 · Read more →
Serious SDWA violator: COUNTRY MANOR, Pomfret, CT
PWS ID: CT1120041. County: Windham
2026-05-11 · Read more →
Serious SDWA violator: 27 MAPLE DRIVE, Monroe, CT
PWS ID: CT0859071. County: Fairfield
2026-05-11 · Read more →
Free eligibility check — plus weekly MCL, deadline, and funding alerts for Connecticut.
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| REGIONAL WATER AUTHORITY CT0930011 | NEW HAVEN | 418,900 | 7.1 | 10.7 | Exceeds |
| METROPOLITAN DISTRICT COMMISSION CT0640011 | HARTFORD | 390,887 | — | — | Compliant |
| AQUARION-EASTERN FAIRFIELD COUNTY CT0150011 | SHELTON | 351,756 | 10.9 | 6.6 | Exceeds |
| AQUARION-STAMFORD CT1350011 | SHELTON | 119,214 | 4.3 | — | Exceeds |
| WATERBURY WATER DEPARTMENT CT1510011 | WATERBURY | 107,271 | — | — | Compliant |
| CTWC - NORTHERN REG-WESTERN SYSTEM CT0473011 | CLINTON | 101,313 | 8 | 6 | Exceeds |
| NEW BRITAIN WATER DEPARTMENT CT0890011 | NEW BRITAIN | 73,534 | — | — | Compliant |
| DANBURY WATER DEPARTMENT |
PWS ID: CT0410354. County: Middlesex
2026-05-11 · Read more →
Serious SDWA violator: COLCHESTER ESTATES, Colchester, CT
PWS ID: CT0280041. County: New London
2026-05-11 · Read more →
| DANBURY |
| 62,055 |
| 5.4 |
| — |
| Exceeds |
| MANSFIELD CT0000251 | MANSFIELD | 60,000 | — | — | Compliant |
| MERIDEN WATER DIVISION CT0800011 | MERIDEN | 58,441 | 6.1 | 9.5 | Exceeds |
| AQUARION-GREENWICH CT0570011 | SHELTON | 53,297 | 5.6 | 4.1 | Exceeds |
| BRISTOL WATER DEPARTMENT CT0170011 | BRISTOL | 52,079 | 4.1 | — | Exceeds |
| MANCHESTER WATER DEPARTMENT CT0770021 | MANCHESTER | 51,198 | 13 | 16 | Exceeds |
| SOUTHINGTON WATER DEPARTMENT CT1310011 | SOUTHINGTON | 43,069 | 8 | 6 | Exceeds |
| SOUTH NORWALK ELECTRIC & WATER CT1030021 | WILTON | 42,000 | — | — | Compliant |
| MIDDLETOWN WATER DEPARTMENT CT0830011 | MIDDLETOWN | 41,019 | — | — | Compliant |
| NORWALK FIRST TAXING DISTRICT CT1030011 | NORWALK | 40,256 | 9.5 | 11.2 | Exceeds |
| TORRINGTON WATER COMPANY CT1430011 | SHELTON | 37,915 | — | — | Compliant |
| WALLINGFORD WATER DEPARTMENT CT1480011 | WALLINGFORD | 37,267 | — | 13.9 | Exceeds |
| NORWICH PUBLIC UTILITIES CT1040011 | NORWICH | 36,163 | 6.7 | 16.2 | Exceeds |
| AQUARION WATER/NH NH1051010 | MONROE | 34,000 | 4.7 | 4.5 | Exceeds |
| CTWC - SHORELINE REGION-GUILFORD SYSTEM CT0608011 | CLINTON | 33,975 | 6 | 12 | Exceeds |
| Mohegan Tribal Utility Authority 010109005 | Uncasville | 31,961 | — | — | Compliant |
| GROTON UTILITIES CT0590011 | GROTON | 30,200 | — | — | Compliant |
| REGIONAL WATER AUTHORITY-ANSONIA CT0020021 | NEW HAVEN | 29,600 | — | — | Compliant |
| NEW LONDON DEPT. OF PUBLIC UTILITIES CT0950011 | WATERFORD | 27,620 | — | — | Compliant |
| UNIVERSITY OF CONNECTICUT - MAIN CAMPUS CT0780021 | STORRS | 27,199 | — | 5 | Exceeds |
| Mashantucket Pequot Water System 010106001 | MASHANTUCKET | 26,445 | 7.4 | — | Exceeds |
| CTWC - NAUGATUCK REGION-CENTRAL SYSTEM CT0880011 | CLINTON | 22,735 | — | — | Compliant |
| WINDHAM WATER WORKS CT1630011 | MANSFIELD CENTER | 21,214 | — | — | Compliant |
| AQUARION-DARIEN CT0350011 | SHELTON | 18,737 | 5.8 | — | Exceeds |
| HAZARDVILLE WATER COMPANY CT0490021 | ENFIELD | 18,544 | 8.6 | 5.4 | Exceeds |
| AQUARION-PLAINVILLE REGIONAL CT1100011 | SHELTON | 18,231 | 5.2 | 6.8 | Exceeds |
| MASHANTUCKET PEQUOT TRIBAL NATION CT0723011 | MASHANTUCKET | 17,050 | — | — | Compliant |
| WATERFORD WPCA CT1520071 | WATERFORD | 16,578 | — | — | Compliant |
| EAST LYME WATER & SEWER COMMISSION CT0450011 | NIANTIC | 15,245 | 9.2 | 7.2 | Exceeds |
| CTWC - UNIONVILLE SYSTEM CT0520011 | CLINTON | 14,693 | 6 | 6 | Exceeds |
| AQUARION-SIMSBURY REGIONAL CT1280021 | SHELTON | 14,691 | 4.4 | 4.3 | Exceeds |
| CROMWELL FIRE DISTRICT WATER DEPARTMENT CT0330011 | CROMWELL | 14,316 | — | 4.6 | Exceeds |
| AQUARION-NEW MILFORD REGIONAL CT0960011 | SHELTON | 13,331 | 5.3 | 5.3 | Exceeds |
| AQUARION-VALLEY CT1240011 | SHELTON | 13,080 | 8.1 | 6.9 | Exceeds |
| AVON WATER CO CT0040011 | CLINTON | 11,590 | 7 | 8 | Exceeds |
| AQUARION-MYSTIC CT1370011 | SHELTON | 10,788 | — | — | Compliant |
| AQUARION-NEW CANAAN CT0900011 | SHELTON | 10,097 | 5.6 | — | Exceeds |
| WATERTOWN WATER & SEWER AUTHORITY CT1530021 | OAKVILLE | 9,972 | — | — | Compliant |
| BETHEL WATER DEPT CT0090011 | BETHEL | 9,507 | 5.9 | — | Exceeds |
| WINSTED WATER DEPT CT1500000 | WINCHESTER | 8,954 | — | — | Compliant |
| WINSTED WATER WORKS CT1620011 | WINSTED | 7,784 | — | — | Compliant |
| KENSINGTON FIRE DISTRICT CT0070011 | KENSINGTON | 7,553 | — | — | Compliant |
| AQUARION-RIDGEFIELD CT1180011 | SHELTON | 7,476 | 10.6 | 6.1 | Exceeds |
| HERITAGE WATER COMPANY CT1300021 | CLINTON | 7,300 | 4.1 | — | Exceeds |
| PUTNAM WATER POLLUTION CONTROL AUTHORITY CT1160011 | PUTNAM | 7,300 | 8.5 | 7.5 | Exceeds |
| JEWETT CITY WATER COMPANY CT0580011 | ENFIELD | 6,840 | — | — | Compliant |
| WATERTOWN FIRE DISTRICT CT1530011 | WATERTOWN | 6,718 | — | — | Compliant |
| CTWC - CRYSTAL SYSTEM CT0690011 | CLINTON | 6,378 | 9.9 | 6.8 | Exceeds |
| CTWC - NAUGATUCK REG-COLLINSVILLE SYS CT0230011 | CLINTON | 6,324 | 4.9 | 5.6 | Exceeds |
| AQUARION-NEWTOWN REGIONAL CT0970011 | SHELTON | 6,054 | 15.9 | 12.7 | Exceeds |
| CTWC - NAUGATUCK REG-TERRYVILLE SYSTEM CT1110011 | CLINTON | 5,607 | — | — | Compliant |
| BERLIN WATER CONTROL COMMISSION CT0070021 | BERLIN | 5,128 | — | — | Compliant |
| CTWC - SHORELINE REGION-CHESTER SYSTEM CT0261031 | CLINTON | 5,030 | — | — | Compliant |
| PORTLAND WATER DEPARTMENT CT1130011 | PORTLAND | 5,010 | — | — | Compliant |
| LEDYARD WPCA, HIGHLANDS SYSTEM CT0720031 | LEDYARD | 4,134 | — | — | Compliant |
| COLCHESTER SEWER & WATER COMMISSION CT0280011 | COLCHESTER | 4,020 | — | 9 | Exceeds |
| CTWC - NAUGATUCK REG-THOMASTON SYSTEM CT1400011 | CLINTON | 3,789 | — | — | Compliant |
| LEDYARD WPCA - LEDYARD CENTER CT0727091 | LEDYARD | 3,294 | — | — | Compliant |
| AQUARION-LITCHFIELD REGIONAL CT0740011 | SHELTON | 3,097 | — | — | Compliant |
| CTWC - SHORELINE REGION-SOUND VIEW CT1050732 | CLINTON | 3,028 | — | — | Compliant |
| CONNECTICUT VALLEY HOSPITAL CT0830021 | MIDDLETOWN | 2,928 | — | — | Compliant |
| WORTHINGTON FIRE DISTRICT CT0070031 | BERLIN | 2,875 | — | — | Compliant |
| TORRINGTON WATER SUPPLY, CITY OF CT1430021 | TORRINGTON | 2,720 | — | — | Compliant |
| FAIRFIELD HILLS CT0970021 | NEWTOWN | 2,610 | — | — | Compliant |
| SCWA, MONTVILLE DIVISION (MTV) CT0860011 | GALES FERRY | 2,570 | — | — | Compliant |
| SCWA, TOWER-FERRY VIEW DIVISION CT0720041 | GALES FERRY | 2,567 | — | — | Compliant |
| WOLCOTT WATER DEPARTMENT CT1661423 | WOLCOTT | 2,550 | — | — | Compliant |
| CTWC - GALLUP SYSTEM CT1090031 | CLINTON | 2,538 | — | — | Compliant |
| GROTON LONG POINT ASSOCIATION CT0590051 | GROTON | 2,400 | — | — | Compliant |
| CONNECTICUT CORRECTIONAL INSTITUTE CT0490031 | WETHERSFIELD | 2,385 | — | — | Compliant |
| LEDYARD WPCA, GALES FERRY SYSTEM CT0727051 | LEDYARD | 2,369 | — | — | Compliant |
| ELLINGTON ACRES COMPANY CT0480031 | EAST WINDSOR | 2,342 | — | — | Compliant |
| SALMON BROOK DISTRICT WATER DEPT CT0560011 | GRANBY | 2,151 | — | — | Compliant |
| NOANK FIRE DISTRICT CT0590031 | NOANK | 1,947 | — | — | Compliant |
| AQUARION-SALISBURY CT1220011 | SHELTON | 1,932 | — | — | Compliant |
| CTWC - HEBRON CENTER DIVISION CT0672031 | CLINTON | 1,927 | — | — | Compliant |
| AQUARION-NEW HARTFORD CT0920011 | SHELTON | 1,872 | — | — | Compliant |
| SCWA, NORTH STONINGTON DIVISION (NST) CT1020021 | GALES FERRY | 1,860 | — | — | Compliant |
| CTWC - PLAINFIELD SYSTEM CT1090081 | CLINTON | 1,713 | — | — | Compliant |
| MONTVILLE CORRECTIONAL COMPLEX CT0861211 | WETHERSFIELD | 1,689 | — | — | Compliant |
| DURHAM CENTER DIVISION CT0380021 | DURHAM | 1,601 | — | — | Compliant |
| AQUARION-NORTH CANAAN CT1000011 | SHELTON | 1,481 | — | — | Compliant |
| TARIFFVILLE FIRE DISTRICT WATER DEPT CT1280011 | TARIFFVILLE | 1,477 | — | — | Compliant |
| SCWA, MOHEGAN DIVISION CT0860021 | GALES FERRY | 1,428 | — | — | Compliant |
| CTWC - LEGEND HILL SYSTEM CT0765101 | CLINTON | 1,368 | — | — | Compliant |
| AQUARION-MARLBOROUGH CT0798013 | SHELTON | 1,348 | — | — | Compliant |
| CTWC - NAUGATUCK DIV, TOWN OF MIDDLEBURY CT0810383 | CLINTON | 1,332 | — | — | Compliant |
| CANDLEWOOD SHORES TAX DISTRICT CT0180061 | BETHEL | 1,315 | — | — | Compliant |
| MONTVILLE WATER SUPPLY CT0864011 | UNCASVILLE | 1,300 | — | — | Compliant |
| TOLLAND WATER DEPARTMENT CT1423011 | TOLLAND | 1,251 | — | — | Compliant |
| AQUARION-WOODBURY CT1680011 | SHELTON | 1,209 | — | — | Compliant |
| AQUARION WATER CO OF CT-WESTERN BROOKFLD CT0180141 | BRIDGEPORT | 1,203 | — | — | Compliant |
| OLD LYME SHORES CT1050072 | OLD LYME | 1,200 | — | — | Compliant |
| AQUARION-EAST DERBY CT0378011 | SHELTON | 1,101 | — | — | Compliant |
| CTWC - THOMPSON SYSTEM CT1410011 | CLINTON | 1,070 | — | — | Compliant |
| CTWC - SHORELINE REGION-POINT O WOODS CT1050752 | CLINTON | 1,068 | — | — | Compliant |
| SPRAGUE WATER & SEWER AUTHORITY CT1330021 | BALTIC | 1,058 | — | — | Compliant |
| CTWC - NORTHERN REG-SOMERS SYSTEM CT1290011 | EAST WINDSOR | 1,051 | — | — | Compliant |
| UNIVERSITY OF CONNECTICUT - DEPOT CAMPUS CT0780011 | STORRS | 1,010 | — | — | Compliant |
| SOUND VIEW IMPROVEMENT CO CT1050102 | OLD LYME | 1,000 | — | — | Compliant |
| AQUARION WATER COMPANY MA1267000 | BRIDGEPORT | 987 | — | — | Compliant |
| AQUARION-RIDGEFIELD KNOLLS CT1180021 | SHELTON | 958 | — | — | Compliant |
| SOUND VIEW IMPROVMENT CO CT1050101 | OLD LYME | 940 | — | — | Compliant |
| AQUARION-NORFOLK CT0980011 | SHELTON | 913 | — | — | Compliant |
| WOODLAKE TAX DISTRICT CT1680031 | WOODBURY | 912 | — | — | Compliant |
| AQUARION WATER CO OF CT-GREENRIDGE CT0180071 | BRIDGEPORT | 912 | — | — | Compliant |
| CTWC - AMSTON LAKE DIVISION CT0670331 | CLINTON | 910 | — | — | Compliant |
| LAKE AMSTON DIV BESECK LK WATE CT0670031 | HEBRON | 908 | — | — | Compliant |
| OAKDALE HEIGHTS ASSOCIATION, INC CT0860031 | GALES FERRY | 876 | — | — | Compliant |
| AVERY HEIGHTS WATER ASSN INC CT1320011 | SOUTH WINDSOR | 864 | — | — | Compliant |
| AQUARION-KENT CT0680011 | SHELTON | 817 | — | — | Compliant |
| SOUTHBURY TRAINING SCHOOL CT1300011 | SOUTHBURY | 816 | — | — | Compliant |
| SHARON WATER & SEWER COMMISSION CT1250011 | SHARON | 803 | — | — | Compliant |
| GREENWICH AMERICAN CENTER CT0570062 | GREENWICH | 800 | — | — | Compliant |
| TOWN OF SOMERS - SOMERSVILLE SYSTEM CT1299021 | SOMERS | 800 | — | — | Compliant |
| GAYLORD HOSPITAL CT1488011 | WALLINGFORD | 755 | — | — | Compliant |
| AQUARION WATER CO OF CT-RIDGEFIELD LAKES CT1180081 | BRIDGEPORT | 750 | — | — | Compliant |
| CTWC - JENSENS BEECHWOOD SYSTEM CT0700011 | CLINTON | 750 | — | — | Compliant |
| CTWC - UCONN SOUTH EAGLEVILLE DIV. CT0787111 | CLINTON | 750 | — | — | Compliant |
| CLC OWNERS CORPORATION CT0960071 | BROOKFIELD | 736 | — | — | Compliant |
| KENT SCHOOL CORP (VALLEY CAMPUS) CT0680021 | KENT | 722 | — | — | Compliant |
| LAKE WAUBEEKA ASSOCIATION CT0340171 | DANBURY | 712 | — | — | Compliant |
| CTWC - SPICE HILL DIVISION CT0428031 | CLINTON | 712 | — | — | Compliant |
| CTWC - COVENTRY HILLS DIV CT0320091 | CLINTON | 700 | — | — | Compliant |
| CTWC - NORTHERN REG-CRESCENT LAKE SYSTEM CT0493011 | CLINTON | 680 | — | — | Compliant |
| SCWA, LEDYARD CENTER DIVISION CT0720313 | GALES FERRY | 652 | — | — | Compliant |
| ROLLINGWOOD CONDOMINIUMS CT0180261 | SEYMOUR | 646 | — | — | Compliant |
| MEADOWS AT CROSS RIVER NY5920685 | BETHEL | 630 | — | — | Compliant |
| AQUARION-BALL POND CT0910011 | SHELTON | 629 | — | — | Compliant |
| WOODSTOCK ACADEMY SOUTH CAMPUS CT1691171 | WOODSTOCK | 620 | — | — | Compliant |
| WATERTOWN WATER & SEWER - WESTGATE CT1539031 | OAKVILLE | 600 | — | — | Compliant |
| LORD S POINT ASSN CT1370041 | STONINGTON | 600 | — | — | Compliant |
| AQUARION-SUFFIELD CT1390021 | SHELTON | 595 | — | — | Compliant |
| CANDLEWOOD KNOLLS COMMUNITY IN CT0910061 | NEW FAIRFIELD | 568 | — | — | Compliant |
| BRUNSWICK SCHOOL (LOWER & LOWER MIDDLE) CT0579143 | GREENWICH | 567 | — | — | Compliant |
| QUONNIPAUG HILLS - MAIN SYSTEM CT0600041 | BRANFORD | 564 | — | — | Compliant |
| AQUARION WATER CO OF CT-SO. BROOKFIELD CT0189961 | BRIDGEPORT | 561 | — | — | Compliant |
| PRESTON PLAINS WATER COMPANY CT1140011 | MASHANTUCKET | 550 | — | — | Compliant |
| EDGEMERE CONDOMINIUM ASSN., INC. CT0420021 | EAST HAMPTON | 540 | — | — | Compliant |
| CANDLEWOOD KNOLLS WATER AUTHORITY CT0910591 | NEW FAIRFIELD | 524 | — | — | Compliant |
| SCWA, CHESTERFIELD DIVISION CT0860081 | GALES FERRY | 524 | — | — | Compliant |
| SALISBURY SCHOOL CT1220061 | SALISBURY | 520 | — | — | Compliant |
| STONE BRIDGE CENTER FOR HEALTH & REHAB CT0971011 | NEWTOWN | 504 | — | — | Compliant |
| CTWC - SOUTH COVENTRY SYSTEM CT0320051 | CLINTON | 501 | — | — | Compliant |
| KILLINGLY INDUSTRIAL PARK CT0690092 | DANIELSON | 500 | — | — | Compliant |
| WHITE SANDS BEACH CT1050111 | OLD LYME | 500 | — | — | Compliant |
| AVON OLD FARMS SCHOOL CT0041011 | AVON | 500 | — | — | Compliant |
| LAKE BESECK DIV BESECK LK WATE CT0820011 | MIDDLEFIELD | 500 | — | — | Compliant |
| HAWKS NEST BEACH 3 CT1050031 | OLD LYME | 500 | — | — | Compliant |
| SUNNY VALLEY TAX DISTRICT CT0960031 | NEW MILFORD | 500 | — | — | Compliant |
| YESHIVA OF WATERBURY-DURHAM CAMPUS CT0380041 | WATERBURY | 490 | — | — | Compliant |
| KITEMAUG ORCHARD ASSOCIATION, INC. CT0860041 | UNCASVILLE | 490 | — | — | Compliant |
| WOODHAVEN APARTMENTS CT1600031 | WILLINGTON | 489 | — | — | Compliant |
| AQUARION-FALLS VILLAGE CT0210011 | SHELTON | 488 | — | — | Compliant |
| CTWC - NORTHERN REGION-LAKEVIEW TERRACE CT0320021 | CLINTON | 472 | — | — | Compliant |
| HARMONY ACRES MOBILE HOME PARK CT1150031 | PLAINVILLE | 465 | — | — | Compliant |
| VILLAGE MARKET PLACE CT0550321 | GOSHEN | 462 | — | — | Compliant |
| MIAMI BEACH WATER COMPANY CT1051021 | CLINTON | 460 | — | — | Compliant |
| AQUARION-LAKESIDE CT1300031 | SHELTON | 455 | — | — | Compliant |
| SCWA, HILLCREST DIVISION (HLC) CT0860131 | GALES FERRY | 450 | — | — | Compliant |
| AQUARION-OXFORD TOWNE CENTER CT1085061 | SHELTON | 449 | — | — | Compliant |
| CTWC - SHORELINE REGION-MASONS ISLAND CT1370051 | CLINTON | 445 | — | — | Compliant |
| CTWC - BAY MOUNTAIN CT0580041 | CLINTON | 440 | — | — | Compliant |
| VERNON VILLAGE INC. CT1463011 | VERNON | 430 | — | — | Compliant |
| STAFFORD HOLLOW WATER ASSOCIATION CT1341303 | STAFFORD | 429 | — | — | Compliant |
| CTWC - REDWOOD FARMS DIVISION CT0770041 | CLINTON | 424 | — | — | Compliant |
| OAKLAND HEIGHTS MOBILE HOME PARK CT1040081 | NORWICH | 413 | — | — | Compliant |
| AQUARION-NEW FAIRFIELD CT0915221 | SHELTON | 406 | — | — | Compliant |
| POMFRET SCHOOL CT1120051 | POMFRET | 400 | — | — | Compliant |
| RUMSEY HALL SCHOOL CT1501111 | WASHINGTON | 398 | — | — | Compliant |
| AQUARION-MEADOWBROOK CT0960201 | SHELTON | 396 | — | — | Compliant |
| AQUARION-ARLINGTON ACRES CT1370071 | SHELTON | 392 | — | — | Compliant |
| STONY HILL VILLAGE CONDOMINIUM ASSN CT0180251 | DANBURY | 392 | — | — | Compliant |
| AQUA VISTA ASSOC, INC CT0340111 | DANBURY | 388 | — | — | Compliant |
| SCWA, ROBIN HILL DIVISION (RBN) CT0867101 | GALES FERRY | 388 | — | — | Compliant |
| SCWA, CEDAR RIDGE DIVISION CT1020011 | GALES FERRY | 370 | — | — | Compliant |
| EAST HAMPTON WPCA - VILLAGE CENTER CT0429031 | EAST HAMPTON | 366 | — | — | Compliant |
| WOLCOTT VIEW MANOR CT1660041 | WOLCOTT | 366 | — | — | Compliant |
| GQC WELL COMMISSION CT0400041 | VERNON | 360 | — | — | Compliant |
| TURKEY HILL OF EAST GRANBY, LLC CT0400031 | EAST GRANBY | 360 | — | — | Compliant |
| KNOLLCREST TAX DISTRICT CT0910081 | NEW FAIRFIELD | 356 | — | — | Compliant |
| HAZARDVILLE - RYE HILL SYSTEM CT1299031 | ENFIELD | 352 | — | — | Compliant |
| CTWC - ASHFORD PARK DIVISION CT0030031 | CLINTON | 334 | — | — | Compliant |
| EAST HAMPTON WPCA - ROYAL OAKS SYSTEM CT0429121 | EAST HAMPTON | 328 | — | — | Compliant |
| AQUARION-PLEASURE VALLEY CT1041001 | SHELTON | 328 | — | — | Compliant |
| WILLINGTON SENIOR CENTER & HOUSING CT1609141 | WILLINGTON | 327 | — | — | Compliant |
| ETHEL WALKER SCHOOL CT1280051 | SIMSBURY | 325 | — | — | Compliant |
| AQUARION-CARMEN HILL CT0960101 | SHELTON | 322 | — | — | Compliant |
| JEWETT CITY WATER CO., S & W SYSTEM CT0580051 | ENFIELD | 320 | — | — | Compliant |
| SANDY LANE VILLAGE CONDO. ASSN., INC. CT0180211 | BETHEL | 318 | — | — | Compliant |
| WYNDHAM PARK APARTMENTS CT1630021 | WINDHAM | 312 | — | — | Compliant |
| KNOLLWOOD APARTMENTS CT0780051 | STORRS | 312 | — | — | Compliant |
| CANDLEWOOD TRAILS ASSOCIATION, INC. CT0960091 | NEW MILFORD | 312 | — | — | Compliant |
| AQUARION-TIMBER TRAILS CT1270021 | SHELTON | 310 | — | — | Compliant |
| STERLING WATER SYSTEM CT1360011 | ONECO | 308 | — | — | Compliant |
| AQUARION-POSSUM RIDGE CT0910041 | SHELTON | 307 | — | — | Compliant |
| CTWC - GENERAL WATER DIVISION CT0320071 | CLINTON | 306 | — | — | Compliant |
| SUNNY WATERS MOBILE HOME PARK CT1040091 | GALES FERRY | 303 | — | — | Compliant |
| MEADOWS APARTMENTS CT0861021 | CANTERBURY | 301 | — | — | Compliant |
| BIRCH GROVES ASSOCIATION, INC CT0960061 | NEW MILFORD | 300 | — | — | Compliant |
| BEDROCK TOWERWOOD MOBILE HOME COMMUNITY FL6534441 | WESTPORT | 300 | — | — | Compliant |
| CEDAR RIDGE APARTMENTS CT1600081 | STORRS | 300 | — | — | Compliant |
| THE FREDERICK GUNN SCHOOL, INC. CT1500051 | WASHINGTON | 300 | — | — | Compliant |
| SCWA, BARRETT DIVISION (BAR) CT0720011 | GALES FERRY | 300 | — | — | Compliant |
| POST MOBILE HOMES NY5301423 | STAMFORD | 300 | — | — | Compliant |
| THE RECTORY SCHOOL CT1120061 | POMFRET | 300 | — | — | Compliant |
| ARROWHEAD POINT HOMEOWNERS ASSN INC. CT0180091 | BROOKFIELD | 296 | — | — | Compliant |
| CHADWICK HOMEOWNERS ASSN., INC. CT1050011 | OLD LYME | 292 | — | — | Compliant |
| ARROWHEAD BY THE LAKE ASSOCIATION, INC. CT1669011 | SEYMOUR | 288 | — | — | Compliant |
| AQUARION-OAKWOOD ACRES CT0910031 | SHELTON | 286 | — | — | Compliant |
| OLD FARMS CONDOMINIUM ASSOCIATION INC CT0960191 | NEW MILFORD | 285 | — | — | Compliant |
| WALDEN APARTMENTS CT1600041 | WILLINGTON | 276 | — | — | Compliant |
| ST. THOMAS MORE SCHOOL-MAIN SYSTEM CT0861251 | OAKDALE | 270 | — | — | Compliant |
| TOLLAND SUMMIT COMMUNITY WATER CT1420031 | TOLLAND | 270 | — | — | Compliant |
| MOOSUP GARDEN APARTMENTS CT1090221 | WEATOGUE | 270 | — | — | Compliant |
| CTWC - BANNER VILLAGE CT0410744 | CLINTON | 265 | — | — | Compliant |
| AQUARION-FOREST HILLS CT0960141 | SHELTON | 265 | — | — | Compliant |
| AQUARION WATER CO OF CT-TOWNE BROOKE CT0189841 | BRIDGEPORT | 264 | — | — | Compliant |
| ST. THOMAS MORE SCHOOL-SYSTEM #4 CT0868031 | OAKDALE | 260 | — | — | Compliant |
| ST. THOMAS MORE SCHOOL-SYSTEM #5 CT0861261 | OAKDALE | 260 | — | — | Compliant |
| ST. THOMAS MORE SCHOOL-SYSTEM #2 CT0860181 | OAKDALE | 260 | — | — | Compliant |
| WOODBURY KNOLL, LLC. CT1680051 | WATERTOWN | 258 | — | — | Compliant |
| CTWC - NORTHERN REGION-LAKEWOOD CT0320011 | CLINTON | 256 | — | — | Compliant |
| MATULAITIS NURSING HOME CT1160021 | PUTNAM | 254 | — | — | Compliant |
| CTWC - WESTCHESTER VILLAGE CT0282001 | CLINTON | 252 | — | — | Compliant |
| MILLSTONE POINT CT1520032 | WATERFORD | 252 | — | — | Compliant |
| JOHNSON MEMORIAL HOSPITAL, INC CT1340032 | STAFFORD SPRINGS | 250 | — | — | Compliant |
| AQUARION-INDIAN SPRING CT0340191 | SHELTON | 242 | — | — | Compliant |
| APPLE REHAB CT1190021 | AVON | 238 | — | — | Compliant |
| SCWA, FERRY VIEW HEIGHTS DIVISION (FVH) CT0720021 | GALES FERRY | 238 | — | — | Compliant |
| HIGH MEADOW ASSOCIATION, INC. CT0187021 | DANBURY | 237 | — | — | Compliant |
| POWDREL & ALEXANDER DIVISION, CRYSTAL CT0690031 | DANIELSON | 237 | — | — | Compliant |
| CTWC - UCONN HUNTING LODGE DIV. CT0787101 | CLINTON | 234 | — | — | Compliant |
| CANDLE HILL MOBILE HOME PARK CT0960151 | STAMFORD | 233 | — | — | Compliant |
| CTWC - PILGRIM HILLS DIVISION CT0320041 | CLINTON | 229 | — | — | Compliant |
| SOUTH KENT SCHOOL CT0680082 | SOUTH KENT | 228 | — | — | Compliant |
| BLUE TRAILS WATER ASSOCIATION CT0990011 | DURHAM | 228 | — | — | Compliant |
| CTWC - CHIMNEY HILL CT0529051 | CLINTON | 227 | — | — | Compliant |
| WESTCHESTER HILLS CONDOMINIUM ASSN. CT0280031 | MYSTIC | 225 | — | — | Compliant |
| COUNTRY MANOR HEALTH CARE CENTER CT1150041 | PROSPECT | 225 | — | — | Compliant |
| COLCHESTER COMMONS CT0286011 | COLCHESTER | 224 | — | — | Compliant |
| CTWC - LONDON PARK DIVISION CT0670011 | CLINTON | 221 | — | — | Compliant |
| THE MARVELWOOD SCHOOL CT0680031 | KENT | 220 | — | — | Compliant |
| HILLDALE PARK HOMEOWNERS ASSOC, INC. CT1090051 | PLAINFIELD | 220 | — | — | Compliant |
| AQUARION-JUDEA MAIN CT1500021 | SHELTON | 219 | — | — | Compliant |
| WOODLAND SUMMIT COMMUNITY WATER ASSN CT1420041 | TOLLAND | 216 | — | — | Compliant |
| CTWC - SHORELINE REG-CHESTER VLLG WEST CT0261081 | CLINTON | 216 | — | — | Compliant |
| CTWC - SDC WATER CT1470011 | CLINTON | 216 | — | — | Compliant |
| AQUARION-CLEARVIEW HILLS CT1668011 | SHELTON | 215 | — | — | Compliant |
| OLD NEWGATE RIDGE WATER COMPANY INC CT0400051 | SOUTH WINDSOR | 208 | — | — | Compliant |
| HERITAGE COVE CONDOMINIUMS CT0500011 | ESSEX | 208 | — | — | Compliant |
| GENDRONS VALLEY MOBILE HOME PARK CT0880041 | NAUGATUCK | 207 | — | — | Compliant |
| QUINEBAUG MOBILE HOME PARK CT1411041 | QUINEBAUG | 205 | — | — | Compliant |
| TOLLAND WATER DEPT - TORRY ROAD CT1429191 | TOLLAND | 204 | — | — | Compliant |
| CTWC - BAKER HILL DIVISION CT0429011 | CLINTON | 203 | — | — | Compliant |
| PIERCE MEMORIAL BAPTIST HOME, INC CT0190101 | BROOKLYN | 200 | — | — | Compliant |
| DURHAM AQUEDUCT CO CT0380011 | DURHAM | 200 | — | — | Compliant |
| VALLEY PARK NY5301429 | STAMFORD | 200 | — | — | Compliant |
| AQUARION-HOLLANDALE ESTATES CT0340251 | SHELTON | 200 | — | — | Compliant |
| LINDHBROOK WATER COMPANY RI1000098 | HARWINTON | 200 | — | — | Compliant |
| WOOSTER SCHOOL CT0345013 | DANBURY | 200 | — | — | Compliant |
| MECKAUER WATER CO., INC. CT0090051 | BRIDGEPORT | 196 | — | — | Compliant |
| CARRIAGE HOUSE APARTMENTS CT0780181 | STORRS | 196 | — | — | Compliant |
| CANDLEWOOD LAKE CONDOMINIUM ASSN., INC. CT0960111 | DANBURY | 196 | — | — | Compliant |
| CTWC - NORTHERN REG-LLYNWOOD SYSTEM CT0120021 | CLINTON | 192 | — | — | Compliant |
| WHITE OAK CONDOMINIUMS CT0780041 | EAST HARTFORD | 192 | — | — | Compliant |
| AQUARION-EAST HAMPTON CT0420011 | SHELTON | 189 | — | — | Compliant |
| CTWC - COUNTRY MOBILE DIV. CT0580021 | CLINTON | 186 | — | — | Compliant |
| BHC-DURGY TRAIL SYSTEM CT1270171 | BRIDGEPORT | 184 | — | — | Compliant |
| CRYSTAL LAKE CONDOMINIUMS CT1210021 | MYSTIC | 184 | — | — | Compliant |
| WATERFORD COUNTRY SCHOOL, INC. CT1520061 | QUAKER HILL | 180 | — | — | Compliant |
| WOODSTOCK MEADOWS CONDOMINIUM ASSN. CT1698011 | WOODSTOCK | 180 | — | — | Compliant |
| BLUESTONE ACRES MHP NY5501275 | STAMFORD | 180 | — | — | Compliant |
| CTWC - RIVERSEDGE DIVISION CT1609111 | CLINTON | 179 | — | — | Compliant |
| MALLARD COVE CONDOMINIUM ASSN. CT0427011 | EAST HAMPTON | 177 | — | — | Compliant |
| ORCHARD ACRES ASSOCIATION CT0780061 | EAST HARTFORD | 176 | — | — | Compliant |
| GREENWOOD MOBILE HOME COURT NY3501324 | STAMFORD | 175 | — | — | Compliant |
| FENTON MOBILE ESTATES NY0310330 | STAMFORD | 175 | — | — | Compliant |
| BAXTER FARMS COMMUNITY WATER ASSOC CT1420021 | TOLLAND | 175 | — | — | Compliant |
| RED CEDAR LAKE LAND DEV CORP CT0710031 | LEBANON | 175 | — | — | Compliant |
| CANDLEWOOD TERRACE CONDOMINIUM ASSN CT0347011 | DANBURY | 174 | — | — | Compliant |
| QUONNIPAUG HILLS - UPPER SYSTEM CT0600371 | BRANFORD | 174 | — | — | Compliant |
| CAREFREE HOMEOWNERS ASSOCIATION CT0710011 | LEBANON | 172 | — | — | Compliant |
| SHAKER HEIGHTS WATER COMPANY CT0490041 | ENFIELD | 172 | — | — | Compliant |
| GRISWOLD HEALTHCARE CENTER CT0581001 | GRISWOLD | 170 | — | — | Compliant |
| CTWC - CRYSTAL SPRINGS DIV. CT0787011 | CLINTON | 169 | — | — | Compliant |
| CTWC - SACHEM VILLAGE CONDO CT0792011 | CLINTON | 166 | — | — | Compliant |
| MARLBOROUGH HEALTH CARE CENTER, INC CT0791001 | MARLBOROUGH | 165 | — | — | Compliant |
| WHIPPLES MOBILE HOME PARK CT0598011 | NEW HAVEN | 164 | — | — | Compliant |
| SCWA, CHRISWOOD DIVISION (CWD) CT0727031 | GALES FERRY | 164 | — | — | Compliant |
| AQUARION-DEAN HEIGHTS CT0960161 | SHELTON | 162 | — | — | Compliant |
| CTWC - NORTHERN REG-NATHAN HALE SYSTEM CT0320031 | CLINTON | 160 | — | — | Compliant |
| WOODLAND MOBILE HOME PARK CT1520051 | WATERFORD | 160 | — | — | Compliant |
| HOLIDAY POINT CT1270011 | SHERMAN | 160 | — | — | Compliant |
| 55 SUGAR STREET CT0970071 | SANDY HOOK | 158 | — | — | Compliant |
| TWIN HILLS WATER DISTRICT CT0320061 | BOLTON | 156 | — | — | Compliant |
| HAWTHORNE TERRACE ASSOC CT0340151 | DANBURY | 156 | — | — | Compliant |
| WOODED HILLS MOBILE HOME PARK NY3901311 | STAMFORD | 155 | — | — | Compliant |
| CTWC - WESTCHESTER EAST CT0427021 | CLINTON | 153 | — | — | Compliant |
| MAPLEWOOD-MILLBROOK APARTMENTS CT0780161 | STORRS | 153 | — | — | Compliant |
| CTWC - UCONN DEPOT DIV. CT0787091 | CLINTON | 153 | — | — | Compliant |
| AQUARION-KEN OAKS CT0340211 | SHELTON | 152 | — | — | Compliant |
| CAMPBELL HEIGHTS APARTMENTS CT0229031 | NORWICH | 152 | — | — | Compliant |
| AQUARION-TWIN OAKS CT0968011 | SHELTON | 152 | — | — | Compliant |
| POND VIEW APARTMENTS CT1090181 | BRIDGEPORT | 150 | — | — | Compliant |
| AQUARION-LEBANON CT0710021 | SHELTON | 149 | — | — | Compliant |
| CANDLEWOOD SPRINGS PROPERTY OWNERS ASSN CT0960211 | NEW MILFORD | 148 | — | — | Compliant |
| AQUARION WATER CO OF CT-SCODON - WELL #4 CT1189201 | BRIDGEPORT | 148 | — | — | Compliant |
| AQUARION-INDIAN FIELDS CT0180131 | SHELTON | 147 | — | — | Compliant |
| JEWETT CITY WATER CO-HILL-N-DALE CT0730021 | ENFIELD | 146 | — | — | Compliant |
| RESIDENCES AT CROW HILL, SYSTEM #1 CT0860101 | UNCASVILLE | 144 | — | — | Compliant |
| SNUG HARBOR DEVELOPMENT CORP CT0340231 | DANBURY | 144 | — | — | Compliant |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS CT0180171 | DANBURY | 144 | — | — | Compliant |
| PERRY HILL ESTATES APARTMENTS INC. CT0030021 | EAST HARTFORD | 144 | — | — | Compliant |
| CANDLEWOOD ORCHARDS PROPERTY OWNERS CORP CT0180181 | BROOKFIELD | 144 | — | — | Compliant |
| WALDEN III CONDOMINIUMS CT0602011 | HAMDEN | 143 | — | — | Compliant |
| AQUARION-TYLER LAKE CT0550011 | SHELTON | 142 | — | — | Compliant |
| MAPLE RIDGE FARMS WATER ASSN, INC CT0520041 | FARMINGTON | 140 | — | — | Compliant |
| BRIARWOOD COLLEGE - EDER HALL CT1311011 | SOUTHINGTON | 140 | — | — | Compliant |
| LEDYARD WPCA, LEDYARD CENTER CT0727061 | LEDYARD | 140 | — | — | Compliant |
| NEW PRESTON WATER CO CT1500011 | NEW PRESTON | 139 | — | — | Compliant |
| CANDLE HILL MHP (NORTH) CT0960251 | STAMFORD | 138 | — | — | Compliant |
| BETHANY MOBILE HOME PARK CT0081011 | STAMFORD | 138 | — | — | Compliant |
| IDLEVIEW MOBILE HOME PARK CT0880031 | PLAINVILLE | 138 | — | — | Compliant |
| AQUARION WATER CO OF CT-SOUNDVIEW INT CT1189301 | BRIDGEPORT | 136 | — | — | Compliant |
| ASHFORD HILLS APARTMENTS CT0030011 | ASHFORD | 136 | — | — | Compliant |
| IMPERIAL WOODS DEVELOPMENT CT1070011 | ORANGE | 136 | — | — | Compliant |
| BRADLEY HOME CT0807011 | MERIDEN | 135 | — | — | Compliant |
| DOUGLAS MANOR CT1631031 | WINDHAM | 135 | — | — | Compliant |
| CTWC - UCONN WILLOWBROOK DIV. CT0787121 | CLINTON | 134 | — | — | Compliant |
| AQUARION-PEARCE MANOR CT0340081 | SHELTON | 133 | — | — | Compliant |
| AQUARION-HICKORY HILLS CT0180101 | SHELTON | 132 | — | — | Compliant |
| BIRCH HILLS CONDOMINIUMS CT0030041 | EAST HARTFORD | 132 | — | — | Compliant |
| NEWBURY CROSSING CONDOMINIUM ASSN, INC CT0180221 | BETHEL | 132 | — | — | Compliant |
| VILLAGE APARTMENTS CT0867031 | GROTON | 132 | — | — | Compliant |
| WILDWOOD WATER COMPANY CT1050151 | CLINTON | 132 | — | — | Compliant |
| AQUARION-VALLEY VIEW CT0780211 | SHELTON | 131 | — | — | Compliant |
| ROCK TERRACE TRAILER PARK NY3510766 | STAMFORD | 130 | — | — | Compliant |
| LAKE LILLINONAH SHORES CONDOS CT0180231 | BROOKFIELD | 130 | — | — | Compliant |
| AQUARION-SCODON CT1180041 | SHELTON | 130 | — | — | Compliant |
| COBALT LODGE HEALTHCARE & REHAB CENTER CT0421011 | COBALT | 130 | — | — | Compliant |
| LILLINONAH PARK ESTATES HOMEOWNERS ASSN CT0960171 | BETHEL | 128 | — | — | Compliant |
| MARIANAPOLIS PREP SCHOOL - ST JOHNS CT1410051 | THOMPSON | 128 | — | — | Compliant |
| CTWC - NAUGATUCK REG-HERITAGE/MIDDLEBURY CT0819041 | CLINTON | 128 | — | — | Compliant |
| AVERY HILL WATER ASSOCIATION CT0720061 | LEDYARD | 127 | — | — | Compliant |
| CHELSEA COMMON CONDOMINIUM ASSOCIATION CT0408011 | VERNON | 126 | — | — | Compliant |
| JOCKEYVILLE ESTATES II NY1721823 | STAMFORD | 126 | — | — | Compliant |
| FAIR ACRES MOBILE HOME PARK CT1378021 | NEW HAVEN | 125 | — | — | Compliant |
| HAMPTON MEWS NY1321280 | BROOKFIELD | 125 | — | — | Compliant |
| DEER PARK APARTMENTS CT1600071 | EAST HARTFORD | 125 | — | — | Compliant |
| COUNTRY SQUIRE APARTMENTS CT0330031 | CROMWELL | 124 | — | — | Compliant |
| AQUARION-BUTTERNUT CT0180021 | SHELTON | 124 | — | — | Compliant |
| LEDYARD VILLAGE HOMEOWNERS ASSOCIATION CT0720051 | LEDYARD | 122 | — | — | Compliant |
| GALLUP WATER, LILLIBRIDGE DIV. CT1090171 | DANIELSON | 122 | — | — | Compliant |
| BROOKFIELD WATER COMPANY - EXTENSION 2A CT0189831 | BROOKFIELD | 120 | — | — | Compliant |
| AQUARION-HAWKSTONE CT1080011 | SHELTON | 120 | — | — | Compliant |
| PARK PLACE MHP NY4517170 | STAMFORD | 120 | — | — | Compliant |
| STEPHENS MOBILE HOME PARK NY5301426 | STAMFORD | 120 | — | — | Compliant |
| TOTOKET WOODS-SYSTEM #7 CT0998071 | NORTHFORD | 120 | — | — | Compliant |
| ALCOVY MOBILE HOME PARK GA2170034 | OLD LYME | 120 | — | — | Compliant |
| TOWN IN COUNTRY CONDOMINIUMS - UPPER SYS CT1680021 | NAUGATUCK | 120 | — | — | Compliant |
| HERITAGE HILL CONDOMINIUM ASSN, INC CT1680061 | WATERTOWN | 120 | — | — | Compliant |
| TOWN IN COUNTRY CONDOMINIUMS - LOWER SYS CT1686091 | NAUGATUCK | 120 | — | — | Compliant |
| BEE BROOK CROSSING CONDOMINIUMS CT1500031 | WASHINGTON DEPOT | 120 | — | — | Compliant |
| BROOKWOODS II CT0688011 | KENT | 120 | — | — | Compliant |
| AQUARION-BARNUM CT1189171 | SHELTON | 120 | — | — | Compliant |
| CHESTELM HEALTH & REHABILITATION CENTER CT0411061 | MOODUS | 120 | — | — | Compliant |
| DANBURY WATER DEPT-RIDGEVIEW GARDENS CT0340051 | DANBURY | 116 | — | — | Compliant |
| RIVER'S REACH GA3050080 | OLD LYME | 115 | — | — | Compliant |
| AQUARION-ROLLING RIDGE CT0340271 | SHELTON | 115 | — | — | Compliant |
| CLUB HOUSE APARTMENTS CT0780101 | STORRS | 115 | — | — | Compliant |
| WELLSWOOD ESTATES FOUNDATION, INC. CT0671021 | WILLIMANTIC | 112 | — | — | Compliant |
| CTWC - MARLBOROUGH GARDENS CT0790031 | CLINTON | 110 | — | — | Compliant |
| PINECREST CONDOMINIUMS CT1698041 | EAST HARTFORD | 110 | — | — | Compliant |
| STERLING ENGINEERING CORP. CT0050062 | BARKHAMSTED | 110 | — | — | Compliant |
| NEWTOWN VILLAGE MOBILE HOME PARK CT0970061 | ORANGE | 110 | — | — | Compliant |
| NINIGRET REALTY RI2674928 | STAMFORD | 109 | — | — | Compliant |
| CORNERSTONE OF EAGLE HILL CT0970101 | SANDY HOOK | 108 | — | — | Compliant |
| CORNELL HILLS ASSOC, INC CT0340181 | DANBURY | 108 | — | — | Compliant |
| CORNERSTONE OF EAGLE HILL CT0970134 | SANDY HOOK | 108 | — | — | Compliant |
| QUASSUK HEIGHTS CONDOMINIUM ASSN CT1680041 | WOODBURY | 108 | — | — | Compliant |
| R & R TRAILER PARK CT0690211 | DAYVILLE | 108 | — | — | Compliant |
| SCWA, BIRCHWOOD DIVISION (BWD) CT0869011 | GALES FERRY | 108 | — | — | Compliant |
| ASH WATER COMPANY, LLC CT0720101 | NORWICH | 108 | — | — | Compliant |
| FERNWOOD REST HOME CT0740301 | LITCHFIELD | 107 | — | — | Compliant |
| GROVE SCHOOL - SYSTEM #1 CT0760031 | MADISON | 104 | — | — | Compliant |
| JUNIPER CLUB INC. CT0110051 | BLOOMFIELD | 104 | — | — | Compliant |
| CTWC - GREEN SPRINGS SYSTEM CT0760021 | CLINTON | 104 | — | — | Compliant |
| LEBANON PINES, SYSTEM #1 CT0710041 | LEBANON | 104 | — | — | Compliant |
| WILLINGTON RIDGE CONDOS - SYSTEM #1 CT1606111 | GLASTONBURY | 102 | — | — | Compliant |
| LAKE HILLS VILLAGE CONDOMINIUMS CT1660011 | PROSPECT | 102 | — | — | Compliant |
| WILLINGTON RIDGE CONDOS - SYSTEM #2 CT1606211 | GLASTONBURY | 102 | — | — | Compliant |
| HARRYBROOKE PARK CONDOMINIUMS CT0960131 | NEW MILFORD | 100 | — | — | Compliant |
| RHINEBECK MOBILE HOME COMMUNITY NY1302135 | STAMFORD | 100 | — | — | Compliant |
| CTWC - FOREST HOMES DIVISION CT0790011 | CLINTON | 100 | — | — | Compliant |
| BOYD COMMUNITY NY3201447 | STAMFORD | 100 | — | — | Compliant |
| ABBY WATER LLC CT0670021 | THOMPSON | 100 | — | — | Compliant |
| CRESTWOOD ESTATES NY2110537 | STAMFORD | 100 | — | — | Compliant |
| ROSELAND TERRACE ASSOCIATION, INC. CT1690021 | WOODSTOCK | 100 | — | — | Compliant |
| TWIN MAPLES NURSING HOME CT0381011 | DURHAM | 100 | — | — | Compliant |
| WESTON WATER SUPPLY CT1570011 | WESTON | 100 | — | — | Compliant |
| BURNHAM ACRES ASSOCIATION, INC CT1320021 | SOUTH WINDSOR | 100 | — | — | Compliant |
| AQUARION-WEST SHORE CT0819061 | SHELTON | 100 | — | — | Compliant |
| BREEZY KNOLL ASSOCIATION CT0878011 | NORWALK | 100 | — | — | Compliant |
| AQUARION-CORNWALL CT0310011 | SHELTON | 98 | — | — | Compliant |
| GRANT HILL ASSOCIATES, INC. CT0110011 | BLOOMFIELD | 97 | — | — | Compliant |
| KENMORE ROAD ASSN.-UPPER SYSTEM CT0117011 | BLOOMFIELD | 96 | — | — | Compliant |
| RIDGEVIEW HEIGHTS CT1600051 | EAST HARTFORD | 96 | — | — | Compliant |
| HILLSIDE CONDOMINIUMS CT0670051 | EAST HARTFORD | 96 | — | — | Compliant |
| WOODS EDGE APARTMENTS CT0780131 | EAST HARTFORD | 96 | — | — | Compliant |
| SOLANO INN LLC CT1130064 | PORTLAND | 96 | — | — | Compliant |
| WOODLAWN APARTMENTS CT0030051 | EAST HARTFORD | 96 | — | — | Compliant |
| GREEN VILLAGE II CT1219141 | GALES FERRY | 96 | — | — | Compliant |
| COUNTRYSIDE DRIVE ASSOCIATION CT1040061 | NORWICH | 96 | — | — | Compliant |
| BANTAM VILLAGE CT0743011 | BANTAM | 96 | — | — | Compliant |
| TERRACE HILL ESTATES #2 NY2100648 | STAMFORD | 95 | — | — | Compliant |
| WHISPERING PINES MHP GA3050030 | OLD LYME | 94 | — | — | Compliant |
| EAST WINDSOR HOUSING AUTHORITY CT0470071 | BROAD BROOK | 94 | — | — | Compliant |
| FERNCLIFF CT1550011 | WEST HARTFORD | 92 | — | — | Compliant |
| SCWA, LANTERN HILL DIVISION (LNH) CT1370021 | GALES FERRY | 92 | — | — | Compliant |
| NEIPSIC WOODS WATER ASSOCIATION CT0540021 | GLASTONBURY | 92 | — | — | Compliant |
| HOLLY WYLE ASSN INC CT0910071 | NEW FAIRFIELD | 90 | — | — | Compliant |
| CONNECTICUT HEALTH OF GREENWICH CT0570021 | GREENWICH | 90 | — | — | Compliant |
| CTWC - RIVERCREST DIVISION CT1130021 | CLINTON | 88 | — | — | Compliant |
| M&M REALTY HOLDINGS LLC CT0709133 | DURHAM | 87 | — | — | Compliant |
| DORCHESTER ESTATES NY0310324 | STAMFORD | 87 | — | — | Compliant |
| SOLAIR RECREATIONAL LEAGUE - OFFICE CT1693011 | WOODSTOCK | 87 | — | — | Compliant |
| LAUREL HILL WATER ASSOCIATION CT0790041 | MARLBOROUGH | 86 | — | — | Compliant |
| THOMPSON HILL WATER CO - PAULA LANE DIV CT1410661 | THOMPSON | 85 | — | — | Compliant |
| SOUTH WILLINGTON WATER COMPANY LLC CT1600011 | WILLINGTON | 85 | — | — | Compliant |
| COOK-WILLOW REALTY CT1110111 | PLYMOUTH | 85 | — | — | Compliant |
| LAKEVIEW ESTATES CT0827071 | MIDDLEFIELD | 85 | — | — | Compliant |
| CRESTVIEW CONDOMINIUM ASSOCIATION CT0251021 | ENFIELD | 84 | — | — | Compliant |
| AQUARION-QUARRY RIDGE CT1500341 | SHELTON | 84 | — | — | Compliant |
| EVANGELICAL CHRISTIAN CENTER - MAIN CT0037001 | ASHFORD | 84 | — | — | Compliant |
| CIELO AZUL RANCH TX1050034 | COLLINSVILLE | 84 | — | — | Compliant |
| KNOB HILL CONDOMINIUMS CT0280051 | MANCHESTER | 84 | — | — | Compliant |
| ARROW POINT WATER CO CT1490021 | NEW PRESTON | 84 | — | — | Compliant |