NPDES discharge permits — CT
149 active individual permits with limits in EPA's file of 2026-09-19.
- AHLSTROM NONWOVENS LLC CT0000434 · major
- AHLSTROM NONWOVENS, LLC CT0026476
- ALLNEX USA INCORPORATED CT0000086 · major
- ANSONIA WPCA, CITY OF CT0100013 · major
- BEACON FALLS WPCF CT0101061
- BRANFORD WPCF CT0100048 · major
- BRIDGEPORT ENERGY LLC CT0030180 · major
- BRIDGEPORT HARBOR 1-4 LLC CT0003778 · major
- BRIDGEPORT-EAST SIDE WPCF CT0101010 · major
- BRIDGEPORT-WEST WPCA CT0100056 · major
- BRISTOL WPCF CT0100374 · major
- Brunswick School, Inc. CT0020800
- CANAAN FIRE DISTRICT CT0100064
- CANTON WPCF CT0100072
- CHESHIRE WPCF CT0100081 · major
- CITY OF STAMFORD CT0101087 · major
- CONNECTICUT GALVANIZING, DIV. OF HIGHWAY SAFETY CORP CT0030449
- CONVENT OF THE SACRED HEART SCHOOL CT0101818
- City of Stamford CT0030279
- DANBURY WPCF CT0100145 · major
- DEEP RIVER TOWN OF CT0101745
- DERBY WPCF, CITY OF CT0100161 · major
- DEVON POWER LLC c/o EASTERN GENERATION LLC CT0003107 · major
- Dunn Paper - East Hartford, LLC CT0002127 · major
- EAST HADDAM WPCF CT0101761
- EAST HAMPTON WPCA CT0024694 · major
- EAST HARTFORD WPCF (MDC) CT0100170 · major
- EAST WINDSOR WPCF CT0100196 · major
- ELECTRIC BOAT CORPORATION CT0003824 · major
- ENFIELD POTW, TOWN OF CT0100200 · major
- FAIRFIELD WPCF CT0101044 · major
- FAIRVIEW COUNTRY CLUB CT0101354
- FARMINGTON WPCF CT0100218 · major
- FIRSTLIGHT CT HOUSATONIC LLC CT0030228
- FIRSTLIGHT CT HOUSATONIC LLC CT0030287
- FIRSTLIGHT CT HOUSATONIC LLC CT0030806
- FIRSTLIGHT CT HOUSATONIC LLC CT0030821
- FIRSTLIGHT CT HYDRO LLC CT0030812
- FIRSTLIGHT CT HYDRO LLC CT0030815
- FORT HILL FARMS, LLC CT0030800
- Firstlight CT Housatonic LLC CT0030803
- Firstlight CT Housatonic LLC CT0030809
- GB II CT LLC CT0003760 · major
- GLASTONBURY WPCF CT0100226 · major
- GREENWICH AMERICAN CENTRE INC CT0030295
- GREENWICH WPCF CT0100234 · major
- GROTON WPCA, CITY OF CT0101184 · major
- GROTON WPCF TOWN OF CT0100242 · major
- HARTFORD MDC WPCF CT0100251 · major
- HARTFORD STEAM CO. CT0004014 · major
- HAYNES MATERIALS COMPANY CT0030678
- HERITAGE VILLAGE COMPANY CT0101133
- HOUSATONIC WPCF CT0101656 · major
- HYPONEX CORPORATION CT0030431
- HYTONE FARM LLC CT0030818
- Haynes Materials Company CT0030465
- JEWETT CITY WPCA CT0100269 · major
- KILLINGLY WPCF TOWN OF CT0101257 · major
- KIMBERLY-CLARK CORPORATION CT0003212 · major
- KING INDUSTRIES * CT0000841
- LEDYARD WATER POLLUTION CT0101681
- LEIDOS RENEWABLE ENERGY, LLC CT0030473
- LITCHFIELD WPCF CT0100803
- MARIANAPOLIS PREPARATORY SCH CT0020893
- MATTABASSETT DISTRICT CROMWELL CT0100307 · major
- MERIDEN WPCF CT0100315 · major
- MIDDLETOWN POWER LLC c/o EASTERN GENERATION LLC CT0003883 · major
- MILFORD-BEAVER BROOK WPCP CT0100749 · major
- MILLSTONE POWER STATION CT0003263 · major
- MIRA DISSOLUTION AUTHORITY CT0003875 · major
- MONTVILLE POWER LLC c/o EASTERN GENERATION LLC CT0003115 · major
- MONTVILLE WPCA CT0100935 · major
- Milford Power Company LLC CT0030309 · major
- NAUGATUCK WPCF CT0100641 · major
- NAVAL SUBMARINE BASE NEW LONDON CT0003921 · major
- NEW CANAAN STP CT0101273 · major
- NEW HARTFORD WPCF CT0100331
- NEW HAVEN EAST SHORE WPCF CT0100366 · major
- NEW LONDON STP CT0100382 · major
- NEW MILFORD WPCF, TOWN OF CT0100391 · major
- NEWTOWN W P C F CT0101788
- NORFOLK SEWER DISTRICT CT0101231
- NORTH HAVEN WPCF CT0100404 · major
- NORTHEAST FISHERIES SCIENCE CT0090182
- NORWALK WPCF CT0101249 · major
- NORWICH WPCF CT0100412 · major
- Nucor Steel Connecticut, Inc. CT0026794
- OAKRIDGE DAIRY, LLC CT0030801
- PFIZER INC CT0000957
- PHARMACIA & UPJOHN COMPANY, LLC CT0001341
- PL 612 WHEELERS FARMS LIMITED CT0024759
- PLAINFIELD NORTH WPCF CT0100447 · major
- PLAINFIELD VILLAGE STP CT0100439
- PLAINVILLE WPCF CT0100455 · major
- PLYMOUTH WPCF CT0100463 · major
- POQUONOCK MDC WPCF CT0100994 · major
- PORTLAND WPCF CT0101150 · major
- PRATT & WHITNEY AIRCRAFT CO. CT0001406
- PROJECT OCEANOLOGY CT0030562
- PUTNAM WPCA CT0100960 · major
- REDDING, TOWN OF CT0101770
- RIDGEFIELD, TOWN OF (MAIN) CT0100854 · major
- ROCKY HILL WPCF CT0100480 · major
- ROUND HILL CLUB CT0100986
- SALISBURY, TOWN OF CT0100498
- SEA RESEARCH FOUNDATION CT0020630
- SEYMOUR WPCF, TOWN OF CT0100501 · major
- SHARON WPCF CT0101052
- SHELTON, CITY OF CT0100714 · major
- SIMSBURY WPCF CT0100919 · major
- SOMERSVILLE WPCF CT0101605
- SOUTH WINDSOR WPCF CT0100510 · major
- SOUTHINGTON WPCF CT0100536 · major
- SPECIALTY MINERALS, INC. CT0003981
- SPRAGUE WWTP CT0100978
- STAFFORD WPCF CT0101214 · major
- STONINGTON-BOROUGH WPCF CT0101281
- STONINGTON-MYSTIC WPCF CT0100544
- STONINGTON-PAWCATUCK WPCF CT0101290 · major
- STRATFORD WPCF CT0101036 · major
- SUFFIELD WPCF CT0100552 · major
- SUMITOMO BAKELITE NORTH AMERICA CT0003379
- SUMMIT CORPORATION OF AMERICA CT0001180 · major
- Sterling Property, LLC CT0026972
- TA Operating LLC CT0029530
- THOMASTON WPCF CT0100781 · major
- THOMPSON WPCF CT0100706 · major
- TILCON CONNECTICUT INC. CT0030155
- TILCON CONNECTICUT, INC. CT0000892
- TILCON CONNECTICUT, INC. CT0000906
- TILCON CONNECTICUT, INC. CT0030635
- TORRINGTON WPCF CT0100579 · major
- TOWN OF MANCHESTER CT0100293 · major
- The Thames Shipyard & Repair Company CT0030333
- Tilcon Connecticut, Inc. CT0030597
- UNITED ALUMINUM CT0030201
- UNITED TECHNOLOGIES CORPORATION, PRATT AND WHITNEY DIVISION CT0001376 · major
- UNIVERSITY OF CONNECTICUT CT0028631
- UNIVERSITY OF CONNECTICUT CT0101320 · major
- VERNON WPCF CT0100609 · major
- WALLINGFORD WPCF CT0100617 · major
- WATERBURY WPCF CT0100625 · major
- WEST HAVEN WPCF CT0101079 · major
- WESTPORT WPCF CT0100684 · major
- WIELAND ROLLED PRODUCTS NORTH AMERICA, LLC CT0021873 · major
- WINCHESTER WPCF/WINSTED WPCF CT0101222 · major
- WINDHAM TOWN OF CT0101001 · major
- WINDSOR LOCKS WPCF CT0101591 · major
- YORK HILL TRAP ROCK QUARRY COMPANY CT0030601
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states