NPDES Permits in New England
Connecticut
Final Individual Permits
To view attachments common to many permits use the "EPA Permit Forms & Attachments" link in the left hand navigation.
Notes:
DWTP = Drinking Water Treatment Plant
POTW = Publicly Owned Treatment Works
SSWWD = Subsurface Wastewater Disposal
SWWDS = Surface Wastewater Disposal System
WPCA(D/F/P) = Water Pollution Control Authority (Division/Facility/Plant)
WTF(P) = Water Treatment Facility (Plant)
WWTF(P) = Wastewater Treatment Facility (Plant)
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
| City - Town (Watershed) | Facility Name | Permit Number | Date of Issuance |
|---|---|---|---|
| Ansonia (Naugatuck River) | Ansonia Copper and Brass, Inc. (MODIFICATION) (PDF) (2 pp, 89 K) | CT0002968 | 02/14/2011 |
| Ansonia (Naugatuck River) | Ansonia Copper and Brass, Inc. (PDF) (17 pp, 759 K) | CT0002968 | 03/22/2006 |
| Ansonia (Naugutuck River) | Ansonia WPCA, City of (PDF) (23 pp, 441 K) | CT0100013 | 12/17/2012 |
| Ansonia (Naugutuck River) | Ansonia WPCA, City of (MODIFICATION) (PDF) (2 pp, 88 K) | CT0100013 | 06/03/2011 |
| Ansonia (Naugutuck River) | Ansonia WPCA, City of (PDF) (26 pp, 866 K) | CT0100013 | 06/30/2006 |
| Baltic (Shetucket River) | Sprague WWTP (PDF) (26 pp, 1 MB) | CT0100978 | 12/23/2005 |
| Bantam (Bantam River) | Litchfield, Town of (PDF) (24 pp, 167 K) | CT0100803 | 09/18/2006 |
| Beacon Falls | Beacon Falls POTW (MODIFICATION) (PDF) (2 pp, 119 K) | CT0101061 | 06/06/2011 |
| Berlin (Silver Lake) | Connecticut Department of Environmental Protection (PDF) (13 pp, 688 K) | CT0029947 | 04/28/2011 |
| Branford (Branford River) | Atlantic Wire Company (PDF) (18 pp, 737 K) | CT0000159 | 12/08/2005 |
| Branford (Branford Harbor) | Branford, Town of (PDF) (22 pp, 430 K) | CT0100048 | 07/08/2013 |
| Branford (Long Marsh Creek) | Tilcon Connecticut, Inc. (PDF) (16 pp, 760 K) | CT0000906 | 05/03/2010 |
| Bridgeport (Long Island Sound, Cedar Creek) | Bridgeport, City of (PDF) (27 pp, 175 K) | CT0100056 | 06/19/2013 |
| Bridgeport (Long Island Sound, Cedar Creek) | Bridgeport West Side POTW (PDF) (25 pp, 2 MB) Fact Sheet (PDF) (3 pp, 195 K) |
CT0100056 | 03/17/2003 |
| Bridgeport (Bridgeport Harbor) | Derecktor Shipyards Conn, LLC (PDF) (17 pp, 99 K) | CT0030501 | 07/06/2010 |
| Canton (Farmington River) | Canton WPCF (PDF) (22 pp, 966 K) | CT0100072 | 04/25/2011 |
| Central Village (Moosup River) | Plainfield North Plant, Town of (PDF) (26 pp, 1.1 MB) | CT0100447 | 10/18/2005 |
| Cheshire (Quinnipac River) | Cheshire WPCD, Town of (PDF) (21 pp, 244 K) | CT0100081 | 09/19/2012 |
| Cheshire (Quinnipac River) | Cheshire WPCD, Town of (PDF) (22 pp, 986 K) | CT0100081 | 09/27/2004 |
| Cheshire (Judd Brook) | Erickson Metals Corporation (PDF) (16 pp, 595 K) | CT0025267 | 07/26/2006 |
| Clinton (Indian River Watershed) | Clinton, Town of (PDF) (11 pp, 327 K) | CTUI0000504 | 10/11/2016 |
| Cromwell (Connecticut River) | Mattabassett District, The (PDF) (23 pp, 117 K) | CT0100307 | 06/30/2009 |
| Danbury (Seth Williams Brook) | Danbury WPCF, City of (MODIFICATION) (PDF) (1 pg, 45 K) | CT0100145 | 12/04/2014 |
| Danbury (Seth Williams Brook) | Danbury WPCF, City of (PDF) (33 pp, 1.3 MB) | CT0100145 | 10/30/2014 |
| Danbury (Limekiln Brook) | Danbury, City of (PDF) (25 pp, 2.1 MB) Fact Sheet (PDF) (4 pp, 257 K) |
CT0100145 | 02/13/2003 |
| Danielson (Quinebaug River) | Killingly, Town of (PDF) (25 pp, 1.3 MB) | CT0101257 | 07/20/2012 |
| Deep River (Connecticut River) | Deep River WPCF, Town of (PDF) (22 pp, 165 K) | CT0101745 | 05/21/2012 |
| Deep River (Connecticut River) | Deep River WPCF, Town of (PDF) (21 pp, 425 K) | CT0101745 | 09/08/2006 |
| Deep River (Deep River Tributary) | Haynes Materials Company (PDF) (12 pp, 143 K) | CT0030465 | 08/30/2007 |
| Deep River (Deep River) | Silgan Plastics Corporation (PDF) (17 pp, 712 K) | CT0000787 | 03/08/2006 |
| Derby (Housatonic River) | Derby, City of (PDF) (30 pp, 1.5 MB) | CT0100161 | 01/08/2013 |
| Derby (Housatonic River) | Derby, City of (PDF) (23 pp, 810 K) | CT0100161 | 06/21/2006 |
| East Haddam (Connecticut River) | East Haddam, Town of (PDF) (25 pp, 1.3 MB) | CT0101761 | 09/04/2013 |
| East Hampton (Connecticut River) | East Hampton, Town of (PDF) (25 pp, 1.2 MB) | CT0024694 | 04/29/2014 |
| East Hampton (Connecticut River) | East Hampton, Town of (PDF) (14 pp, 491 K) | CT0024694 | 09/30/1993 |
| East Hartford (Connecticut River) | Metropolitan District, The (PDF) (29 pp, 917 K) | CT0100170 | 10/07/2016 |
| Hartford (Connecticut River) | Metropolitan District, The (PDF) (22 pp, 905 K) | CT0100170 | 10/07/2005 |
| East Hartford (Connecticut River, Pewter, Willow Brooks) | United Technologies Corporation: Pratt & Whitney Division (PDF) (62 pp, 322 K) | CT0001376 | 01/13/2010 |
| East Norwalk (Norwalk River) | Norwalk, City of (PDF) (26 pp, 1.08 MB) | CT0101249 | 09/25/2005 |
| East Windsor (Connecticut River) | East Windsor WPCF (PDF) (26 pp, 1.2 MB) | CT0100196 | 09/08/2004 |
| East Windsor (Connecticut River) | Textron, Inc. (PDF) (14 pp, 680 K) | CT0030040 | 08/25/2010 |
| Enfield (Connecticut River) | Enfield, Town of (PDF) (24 pp, 810 K) | CT0100200 | 06/21/2006 |
| Fairfield (Mill River) | Exide Group, Inc. (PDF) (16 pp, 1.1 MB) | CT0030651 | 11/20/2013 |
| Fairfield (Long Island Sound) | Fairfield, Town of (PDF) (24 pp, 678 K) | CT0101044 | 11/02/2015 |
| Fairfield (Long Island Sound) | Fairfield, Town of (PDF) (25 pp, 545 K) | CT0101044 | 01/13/2006 |
| Farmington (Farmington River) | Farmington, Town of (PDF) (26 pp, 1.4 MB) | CT0100218 | 06/04/2012 |
| Gales Ferry (Thames River) | Styron LLC (MODIFICATION) (PDF) (33 pp, 280 K) | CT0003131 | 03/07/2011 |
| Glastonbury (Salmon & Hubbard Brook) | Connecticut Galvanizing (PDF) (47 pp, 2.3 MB) | CT0030449 | 09/30/2011 |
| Glastonbury (Connecticut River) | Glastonbury WPCF (PDF) (12 pp, 536 K) | CT0100226 | 02/15/2011 |
| Glastonbury (Connecticut River) | Glastonbury WPCF (PDF) (19 pp, 814 K) | CT0100226 | 09/08/2004 |
| Greenwich (Byram River) | Connecticut Health of Greenwich LLC (PDF) (17 pp, 76 K) | CT0101362 | 10/27/2011 |
| Greenwich (Byram River) | Convent of the Sacred Heart (School) Greenwich, Inc. (PDF) (4 pp, 154 K) | CT0101818 | 06/17/2013 |
| Greenwich (Byram River) | Convent of the Sacred Heart (School) Greenwich, Inc. (PDF) (25 pp, 825 K) | CT0101818 | 10/09/2012 |
| Greenwich (Byram River) | Convent of the Sacred Heart (School) Greenwich, Inc. (PDF) (18 pp, 426 K) | CT0101818 | 08/28/2006 |
| Greenwich (Quarry Pond) | Department of Transportation (PDF) (8 pp, 386 K) | CT0027201 | 12/23/2011 |
| Greenwich (Lake Champlain) | Fairview Country Club, Inc. (PDF) (24 pp, 729 K) | CT0101354 | 06/06/2016 |
| Greenwich (Long Island Sound) | Greenwich, Town of (PDF) (22 pp, 158 K) | CT0100234 | 03/04/2009 |
| Greenwich (Byram River) | Greenwich American, Inc. (PDF) (25 pp, 748 K) | CT0030295 | 12/02/2016 |
| Greenwich (Byram River) | Greenwich American, Inc. (PDF) (18 pp, 710 K) | CT0030295 | 07/01/2006 |
| Greenwich (Byram River) | High Tower Trading LLC (PDF) (18 pp, 149 K) | CT0020800 | 10/18/2007 |
| Greenwich (Byram River) | Round Hill Club, Inc. (PDF) (19 pp, 793 K) | CT0100986 | 10/26/2012 |
| Greenwich (Byram River) | Round Hill Club, Inc. (PDF) (18 pp, 242 K) | CT0100986 | 04/17/2006 |
| Groton (Thames River) | Electric Boat Corporation (MODIFICATION) (PDF) (7 pp, 39 K) | CT0003824 | 04/17/2008 |
| Groton (Thames River) | Electric Boat Corporation (PDF) (42 pp, 1.5 MB) | CT0003824 | 07/05/2006 |
| Groton (Thames River) | Groton, Town of (PDF) (23 pp, 1.1 MB) | CT0100242 | 05/15/2012 |
| Groton (Thames River) | Groton, Town of (PDF) (22 pp, 103 K) | CT0100242 | 09/19/2006 |
| Groton (Thames River) | Groton, City of (PDF) (21 pp, 799 K) | CT0101184 | 06/04/2013 |
| Groton (Thames River) | Groton, City of (PDF) (23 pp, 892 K) | CT0101184 | 10/04/2004 |
| Groton (Thames River) | Pfizer Inc. (PDF) (67 pp, 5.6 MB) | CT0000957 | 05/22/2014 |
| Groton (Thames River) | Pfizer Inc. (MODIFICATION) (PDF) (3 pp, 84 K) | CT0000957 | 05/18/2010 |
| Groton (Thames River) | Pfizer Inc. (MODIFICATION) (PDF) (35 pp, 2 MB) | CT0000957 | 04/23/2010 |
| Groton (Thames River) | Pfizer Inc. (MODIFICATION) (PDF) (2 pp, 20 K) | CT0000957 | 04/16/2009 |
| Groton (Long Island Sound) | Project Oceanology (PDF) (6 pp, 280 K) | CT0030562 | 12/19/2011 |
| Groton (Long Island Sound) | University of Connecticut (MODIFICATION) (PDF) (8 pp, 396 K) | CT0028631 | 07/30/2011 |
| Groton (Long Island Sound) | University of Connecticut (PDF) (11 pp, 52 K) | CT0028631 | 06/29/2011 |
| Groton (Long Island Sound) | University of Connecticut (PDF) (13 pp, 483 K) | CT0028631 | 06/12/2006 |
| Groton (Thames River) | US Naval Submarine Base New London (PDF) (45 pp, 741 K) | CT0003921 | 02/27/2012 |
| Groton (Thames River) | US Naval Submarine Base New London (MODIFICATION) (PDF) (15 pp, 996 K) | CT0003921 | 07/28/2011 |
| Groton (Thames River) | US Naval Submarine Base New London (PDF) (22 pp, 85 K) | CT0003921 | 09/27/2006 |
| Guilford (East Creek) | Rea Magnet Wire Company, Inc. DBA Algonquin Industries (PDF) (17 pp, 175 K) | CT0028100 | 03/09/2011 |
| Guilford (East Creek) | Algonquin Industries Inc. (PDF) (17 pp, 708 K) | CT0028100 | 03/09/2006 |
| Hartford (Park River) | Capitol District Energy Center (PDF) (18 pp, 204 K) | CT0026522 | 09/14/2010 |
| Hartford (Park River and Connecticut River) | Hartford Steam Company (MODIFICATION), The (PDF) (4 pp, 50 K) | CT0004014 | 04/12/2007 |
| Hartford (Park River and Connecticut River) | Hartford Steam Company (MODIFICATION), The (PDF) (4 pp, 50 K) | CT0004014 | 02/23/2007 |
| Hartford (Park River and Connecticut River) | Hartford Stream Company (PDF) (21 pp, 86 K) | CT0004014 | 08/24/2006 |
| Hartford (Connecticut River) | Metropolitan District, The (PDF) (32 pp, 1.6 MB) | CT0100251 | 10/25/2005 |
| Hartford (Connecticut River) | Resource Recovery Systems of CT, Inc. (PDF) (21 pp, 758 K) | CT0003875 | 10/02/1997 |
| Harwinton (Naugatuck River) | Torrington Water Pollution Control Facility (PDF) (44 pp, 1.2 MB) | CT0100579 | 05/11/2015 |
| Lebanon (Shetucket River) | Hyponex Corporation (PDF) (6 pp, 357 K) | CT0030431 | 12/27/2012 |
| Lebanon (Shetucket River) | Hyponex Corporation (PDF) (34 pp, 1.7 MB) | CT0030431 | 11/28/2012 |
| Lebanon (Shetucket River) | Hyponex Corporation (PDF) (11 pp, 462 K) | CT0030431 | 02/10/2006 |
| Ledyard (Seth Williams Brook) | Ledyard, Town of (PDF) (21 pp, 627 K) | CT0101681 | 09/23/2014 |
| Ledyard (Seth Williams Brook) | Ledyard, Town of (PDF) (21 pp, 94 K) | CT0101681 | 07/31/2009 |
| Manchester (Hockanum River) | Manchester, Town of (PDF) (31 pp, 983 K) | CT0100293 | 09/28/2015 |
| Manchester (Hockanum River) | Manchester, Town of (PDF) (24 pp, 432 K) | CT0100293 | 07/21/2006 |
| Manchester (Lydall Brook) | Sumitomo Bakelite North America, Inc. (PDF) (21 pp, 814 K) | CT0003379 | 09/22/2015 |
| Meriden (Quinnipiac River) | Meriden WPCF, City of (PDF) (2 pp, 116 K) | CT0100315 | 07/23/2013 |
| Meriden (Quinnipiac River) | Meriden WPCF, City of (PDF) (26 pp, 1 MB) | CT0100315 | 10/18/2005 |
| Middletown (Connecticut River) | Middletown, City of (PDF) (22 pp, 874 K) | CT0100323 | 02/08/2005 |
| Milford (Housatonic River) | Milford, City of (PDF) (30 pp, 1.5 MB) | CT0101656 | 07/11/2013 |
| Milford (Housatonic River) | Milford, City of (PDF) (25 pp, 1 MB) | CT0101656 | 10/05/2004 |
| Milford (Housatonic River) | Devon Power LLC (Modification) (PDF) (3 pp, 234 K) | CT0003107 | 01/17/2013 |
| Milford (Wepawaug River) | Northeast Fisheries Science Center Milford Lab (US Department of Commerce) (PDF) (17 pp, 526 K) | CT0090182 | 09/09/2014 |
| Milford (Wepawaug River) | Northeast Fisheries Science Center Milford Lab (US Department of Commerce (MODIFICATION)) (PDF) (4 pp, 29 K) | CT0090182 | 08/10/2010 |
| Milford (Wepawaug River) | Northeast Fisheries Science Center Milford Lab (US Department of Commerce) (PDF) (9 pp, 47 K) | CT0090182 | 07/30/2010 |
| Milford (Housatonic River) | NRG Devon Operations Inc. (MODIFICATION) (PDF) (1 pg, 66 K) | CT0003107 | 05/17/2011 |
| Milford | PL 612 Wheelers Farms Limited Partnership (PDF) (5 pp, 131 K) | CT0024759 | 11/09/2015 |
| Milford | PL 612 Wheelers Farms Limited Partnership (PDF) (19 pp, 943 K) | CT0024759 | 06/20/2014 |
| Montville (Thames River) | AES Thames, Inc. (PDF) (21 pp, 805 K) | CT0026298 | 05/28/1996 |
| Mystic (Mystic River) | Mystic WPCF (PDF) (25 pp, 225 K) | CT0100544 | 05/21/2012 |
| Mystic (Mystic River) | Sea Research Foundation, Inc. (MODIFICATION) (PDF) (23 pp, 2.1 MB) | CT0020630 | 07/19/2011 |
| Mystic (Mystic River) | Sea Research Foundation, Inc. (MODIFICATION) (PDF) (1 pg, 13 K) | CT0020630 | 11/02/2009 |
| Mystic (Mystic River) | Sea Research Foundation, Inc. (MODIFICATION) (PDF) (1 pg, 12 K) | CT0020630 | 05/07/2009 |
| Mystic (Mystic River) | Sea Research Foundation, Inc. (PDF) (24 pp, 107 K) | CT0020630 | 03/18/2009 |
| Naugatuck (Naugatuck River) | Naugatuck, Borough of (PDF) (33 pp, 1.2 MB) | CT0100641 | 08/21/2014 |
| New Fairfield (Ball Pond Brook) | New Albertsons, Inc. (Shaw's Supermarkets, Inc.) (PDF) (14 pp, 76 K) | CT0030406 | 04/24/2009 |
| New Haven (New Haven Harbor) | Greater New Haven WPCA (PDF) (27 pp, 136 K) | CT0100366 | 10/01/2010 |
| New Haven (Morris Creek) | Tweed-New Haven Airport Authority (MODIFICATION) (PDF) (4 pp, 27 K) | CT0030457 | 05/15/2009 |
| New Haven (Morris Creek) | Tweed-New Haven Airport Authority (PDF) (27 pp, 98 K) | CT0030457 | 04/17/2008 |
| New London (Thames River) | New London, City of (PDF) (12 pp, 103 K) | CT0100382 | 09/21/2006 |
| New London (Thames River) | Thames Shipyard & Repair Company, The (PDF) (15 pp, 68 K) | CT0030333 | 09/28/2009 |
| New London (Thames River Watershed) | USCG Academy (PDF) (15 pp, 65 K) | CT0029998 | 10/15/2010 |
| New Milford (Housatonic River) | FirstLight Hydro Generating Company, Rocky River Station (PDF) (19 pp, 493 K) | CT0030287 | 10/26/2010 |
| New Milford (Housatonic River) | Food Ingredients Specialties (PDF) (13 pp, 532 K) | CT0000850 | 03/15/1999 |
| New Milford (Housatonic River) | Kimberly-Clark Corporation (PDF) (20 pp, 1 MB) | CT0003212 | 12/09/2005 |
| New Milford (Housatonic River) | New Milford WPCA, Town of (PDF) (23 pp, 288 K) | CT0100391 | 10/01/2012 |
| New Milford (Housatonic River) | New Milford WPCA, Town of (PDF) (23 pp, 833 K) | CT0100391 | 10/04/2004 |
| New Milford (Housatonic River) | New Milford WPCA, Town of (PDF) (23 pp, 749 K) | CT0100391 | 11/10/1998 |
| Newington (Piper Brook) | Tilcon Connecticut, Inc. (PDF) (15 pp, 641 K) | CT0030155 | 05/09/2011 |
| Newtown (Pootactuck River) | Newtown WPCF (PDF) (26 pp, 1.1 MB) | CT0101788 | 10/12/2005 |
| Norfolk (Blackberry River) | Norfolk Sewer District, Town of (PDF) (29 pp, 988 K) | CT0101231 | 08/18/2015 |
| Norfolk (Blackberry River) | Norfolk Sewer District, Town of (PDF) (21 pp, 911 K) | CT0101231 | 10/04/2005 |
| North Caanan (Blackberry River) | Canaan Fire District (PDF) (22 pp, 626 K) | CT0100064 | 06/02/2014 |
| North Caanan (Blackberry River) | Specialty Minerals, Inc. (PDF) (16 pp, 166 K) | CT0003981 | 06/01/2012 |
| North Haven (Quinnipiac River) | Pharmacia & Upjohn Company (PDF) (22 pp, 1.1 MB) | CT0001341 | 01/11/2005 |
| North Haven (Quinnipiac River) | North Haven, Town of (PDF) (24 pp, 167 K) | CT0100803 | 09/20/2006 |
| North Haven (Muddy River) | United Aluminum Corporation (PDF) (13pp, 201 K) | CT0030201 | 06/22/2012 |
| North Haven (Muddy River) | United Aluminum Corporation (PDF) (12 pp, 192 K) | CT0030201 | 08/17/2007 |
| Norwich (Thames River) | Norwich, City of (PDF) (33 pp, 921 K) | CT0100412 | 09/26/2014 |
| Norwich (Thames River) | Norwich Sewer Authority, City of (PDF) (25 pp, 430 K) | CT0100412 | 08/16/2006 |
| Pequabuck (Pequabuck River) | Plymouth, Town of (PDF) (23 pp, 834 K) | CT0100463 | 02/01/2006 |
| Plainville (Pequabuck River) | Plainville, Town of (PDF) (24 pp, 911 K) | CT0100455 | 08/31/2005 |
| Plainville (Quinnipiac River) | Tilcon Connecticut, Inc. (PDF) (11 pp, 60 K) | CT0020656 | 06/08/2010 |
| Plantsville (Quinnipiac River) | Southington, Town of (PDF) (26 pp, 1 MB) | CT0100536 | 11/08/2004 |
| Pomfret (Wappoquia Brook) | Fiberoptics Technology, Inc. (PDF) (12 pp, 525 K) | CT0026832 | 03/06/2006 |
| Portland (Connecticut River) | Portland WPCF, Town of (PDF) (19 pp, 213 K) | CT0101150 | 08/07/2012 |
| Portland (Connecticut River) | Portland WPCF, Town of (PDF) (22 pp, 102 K) | CT0101150 | 10/03/2006 |
| Putnam (Quinebaug River) | Putnam WPCA, Town of (PDF) (3 pp, 184 K) | CT0100960 | 12/05/2012 |
| Putnam (Quinebaug River) | Putnam WPCA, Town of (PDF) (23 pp, 1.3 MB) | CT0100960 | 05/10/2012 |
| Redding (Norwalk River) | Redding, Town of (PDF) (28 pp, 1.1 MB) | CT0101770 | 11/30/2005 |
| Ridgefield (Norwalk River) | Ridgefield, Town of (PDF) (28 pp, 876 K) | CT0101451 | 09/18/2014 |
| Ridgefield (Great Swamp) | Ridgefield WPCF, Town of (PDF) (22 pp, 1.3 MB) | CT0100854 | 09/29/2004 |
| Rockville (Hockanum River) | Ano-coil Corporation (PDF) (15 pp, 85 K) | CT0020389 | 12/03/2010 |
| Rocky Hill (Connecticut River) | Rocky Hill WPCF (PDF) (33 pp, 896 K) | CT0100480 | 11/17/2014 |
| Rocky Hill (Connecticut River) | Rocky Hill WPCF (PDF) (22 pp, 889 K) | CT0100480 | 09/29/2005 |
| Sandy Hook (Pootatuck River) | Lynwood Place, LLC (PDF) (17 pp, 65 K) | CT0101346 | 08/04/2009 |
| Seymour (Beacon Hill Brook) | Haynes Materials Company (PDF) (11 pp, 420 K) | CT0030678 | 09/23/2014 |
| Seymour (Naugatuck River) | Seymour, Town of (PDF) (36 pp, 1.2 MB) | CT0100501 | 09/04/2015 |
| Seymour (Naugatuck River) | Seymour, Town of (PDF) (25 pp, 1.1 MB) | CT0100501 | 03/15/2005 |
| Sharon (Indian Lake Creek) | Sharon, Town of (PDF) (20 pp, 874 K) | CT0101052 | 03/08/2006 |
| Shelton (Housatonic River) | Auto Swage Products, Inc. (PDF) (18 pp, 148 K) | CT0020826 | 05/29/2007 |
| Shelton (Housatonic River) | Shelton WPCF, City of (PDF) (21 pp, 77 K) | CT0100714 | 12/13/2010 |
| Shelton (Housatonic River) | Shelton WPCF, City of (PDF) (22 pp, 855 K) | CT0100714 | 09/29/2004 |
| Simsbury (Farmington River) | Simsbury, Town of (PDF) (22 pp, 878 K) | CT0100919 | 02/22/2005 |
| Somers | Somers, Town of (PDF) (1 pg, 14 K) | CT0101605 | 09/14/2006 |
| Southbury (Lake Zoar) | FirstLight Hydro Generating Company, Shepaug Station (PDF) (13 pp, 115 K) | CT0030228 | 08/04/2010 |
| Southbury | Heritage Village Water Company (Private) (PDF) (27 pp, 1.6 MB) | CT0101133 | 09/12/2013 |
| Southbury (Pomperaug River) | IBM Corporation (PDF) (21 pp, 168 K) | CT0026212 | 09/18/2012 |
| Stafford Springs (Willimantic River) | Stafford WPCF, Town of (PDF) (23 pp, 385 K) | CT0101214 | 02/07/2007 |
| Stamford (Stamford Harbor) | Stamford WPCF, City of (PDF) (21 pp, 275 K) | CT0101087 | 07/25/2013 |
| Stamford (Stamford Harbor) | Stamford WPCF, City of (PDF) (20 pp, 760 K) | CT0101087 | 03/26/2008 |
| Sterling (Moosup River) | Exeter Energy, L.P. (MODIFICATION) (PDF) (6 pp, 56 K) | CT0026972 | 02/22/2011 |
| Sterling (Moosup River) | Exeter Energy, L.P. (PDF) (18 pp, 396 K) | CT0026972 | 01/31/2007 |
| Stonington (Mystic River) | Stonington, Town of (Mystic WPCF) (PDF) (21 pp, 97 K) | CT0100544 | 09/12/2006 |
| Stonington (Stonington Harbor) | Stonington, Town of (2 High Street) (PDF) (24 pp, 965 K) | CT0101281 | 10/07/2005 |
| Stonington (Pawcatuck River) | Stonington, Town of (PDF) (26 pp, 1.4 MB) | CT0101290 | 05/07/2014 |
| Stonington (Pawcatuck River) | Stonington, Town of (PDF) (24 pp, 1.1 MB) | CT0101290 | 11/10/2005 |
| Stratford (Housatonic River) | Sikorsky Aircraft Corporation (MODIFICATION) (PDF) (6 pp, 91 K) | CT0001716 | 02/17/2011 |
| Stratford (Housatonic River) | Sikorsky Aircraft Corporation (MODIFICATION) (PDF) (15 pp, 360 K) | CT0001716 | 01/03/2007 |
| Stratford (Housatonic River) | Sikorsky Aircraft Corporation (PDF) (25 pp, 128 K) | CT0001716 | 09/26/2006 |
| Stratford (Long Island Sound) | Sporting Goods Properties, Inc. (PDF) (14 pp, 74 K) | CT0030171 | 10/19/2011 |
| Stratford (Housatonic River) | Stratford WPCF, Town of (PDF) (30 pp, 850 K) | CT0101036 | 05/01/2015 |
| Stratford (Housatonic River) | Stratford WPCF, Town of (PDF) (20 pp, 792 K) | CT0101036 | 03/13/2008 |
| Storrs (Willimantic River) | University of Connecticut (PDF) (34 pp, 1.7 MB) | CT0101320 | 05/16/2013 |
| Storrs (Willimantic River) | University of Connecticut (PDF) (22 pp, 106 K) | CT0101320 | 11/13/2006 |
| Suffield (Connecticut River) | Suffield WPCF, Town of (PDF) (21 pp, 175 K) | CT0100552 | 02/17/2012 |
| Suffield (Connecticut River) | Suffield WPCF, Town of (PDF) (25 pp, 1 MB) | CT0100552 | 03/15/2005 |
| Thompson (Quinebaug River) | Thompson WPCF (PDF) (27 pp, 255 K) | CT0100706 | 07/18/2012 |
| Thomaston (Naugatuck River) | Quality Rolling and Deburring Co., Inc. (MODIFICATION) (PDF) (7 pp, 40 K) | CT0025305 | 04/28/2011 |
| Thomaston (Naugatuck River) | Quality Rolling and Deburring Co., Inc. (PDF) (25 pp, 1.6 MB) | CT0025305 | 04/01/2008 |
| Thomaston (Naugatuck River) | Summit Corporation of America (PDF) (23 pp, 1.2 MB) | CT0100781 | 12/21/2007 |
| Thomaston (Naugutuck River) | Thomaston, Town of (PDF) (27 pp, 182 K) | CT0100781 | 09/28/2006 |
| Thomaston (Naugatuck River) | Whyco Finishing Technologies (PDF) (20 pp, 968 K) | CT0001457 | 12/28/2007 |
| Torrington (Naugatuck River) | Torrington, City of (PDF) (24 pp, 410 K) | CT0100579 | 08/14/2006 |
| Uncasville (Thames River) | Montville, Town of (PDF) (22 pp, 1.3 MB) | CT0100935 | 12/10/2013 |
| Vernon (Shenipsit Lake) | Connecticut Water Company, The (PDF) (16 pp, 126 K) | CT0030341 | 05/28/2009 |
| Vernon (Holkanum River) | Vernon WPCF, Town of (PDF) (25 pp, 1.1 MB) | CT0100609 | 02/17/2004 |
| Versailles (Papermill Pond) | Sprague Paperboard Inc. (PDF) (21 pp, 871 K) | CT0003751 | 03/08/2006 |
| Wallingford (Quinnipiac River) | Allegheny Ludlum Corporation (PDF) (18 pp, 72 K) | CT0003701 | 06/26/2009 |
| Wallingford (Quinnipiac River) | Ctyec Industries, Inc. (PDF) (59 pp, 486 K) | CT0000086 | 05/17/2011 |
| Wallingford (Quinnipiac River) | Nucor Steel Connecticut, Inc. (MODIFICATION) (PDF) (1 pg, 10 K) | CT0026794 | 02/25/2011 |
| Wallingford (Quinnipiac River) | Nucor Steel Connecticut, Inc. (PDF) (17 pp, 62 K) | CT0026794 | 12/30/2009 |
| Wallingford (Quinnipiac River) | Wallingford WPCF, Town of (PDF) (28 pp, 522 K) | CT0100617 | 04/24/2013 |
| Wallingford (Quinnipiac River) | Wallingford WPCF, Town of (PDF) (6 pp, 985 K) | CT0100617 | 12/28/2005 |
| Washington (Lake Waramaug) | Lake Waramaug InterLocal Commission (PDF) (9 pp, 36 K) | CT0024805 | 04/09/2009 |
| Waterbury (Naugatuck River) | Ansonia Copper & Brass, Inc. (PDF) (13 pp, 82 K) | CT0002968 | 08/15/2011 |
| Waterbury (Naugatuck River) | GBC Metal, LLC (PDF) (22 pp, 89 K) | CT0021873 | 12/18/2009 |
| Waterbury (Naugatuck River) | Siedel, Inc. (PDF) (13 pp, 125 K) | CT0026808 | 06/20/2011 |
| Waterbury (Naugutuck River) | Seidel, Inc (PDF) (15 pp, 596 K) | CT0026808 | 06/13/2006 |
| Waterbury (Naugutuck River) | Waterbury, City of (PDF) (31 pp, 1.8 MB) | CT0100625 | 11/19/2013 |
| Waterford (Long Island Sound) | Dominion Nuclear Connecticut, Inc., Millstone Power Station (PDF) (1 pg, 62 K) | CT0003263 | 09/24/2013 |
| Waterford (Long Island Sound) | Dominion Nuclear Connecticut, Inc., Millstone Power Station (PDF) (120 pp, 520 K) | CT0003263 | 09/01/2010 |
| West Haven (New Haven Harbor) | West Haven, City of (PDF) (22 pp, 407 K) | CT0101079 | 10/26/2006 |
| Westbrook (South Central Shoreline) | D.G.G. Properties Co., Inc. (PDF) (23 pp, 601 K) | CTUI0000087 | 10/11/2016 |
| Westport (Saugutuck River) | Weston/Westport Family Y, Camp Mahackeno (PDF) (16 pp, 459 K) | CTUI0000436 | 09/12/2014 |
| Westport (Saugutuck River) | Westport, Town of (PDF) (21 pp, 425 K) | CT0100684 | 03/26/2007 |
| Willimantic (Shetucket River) | Windham, Town of (PDF) (24 pp, 1 MB) | CT0101001 | 06/30/2013 |
| Willimantic (Shetucket River) | Windham, Town of (PDF) (24 pp, 1 MB) | CT0101001 | 03/15/2005 |
| Willington (Roaring Brook) | TA Operating LLC (PDF) (23 pp, 82 K) | CT0029530 | 07/24/2009 |
| Windsor (Farmington River) | Poquonock WPCF (PDF) (26 pp, 1.2 MB) | CT0100994 | 12/01/2005 |
| Windsor (Farmington and Rainbow Brook(s)) | Windsor-Stevens, Inc. (PDF) (16 pp, 128 K) | CT0003441 | 06/11/2009 |
| Windsor Locks (Connecticut River) | Ahlstrom Nonwovens, LLC (PDF) (46 pp, 185 K) | CT0000434 | 09/24/2009 |
| Windsor Locks (Connecticut River) | Windsor Locks WPCF (PDF) (24 pp, 883 K) | CT0101591 | 09/09/2005 |
| Winsted (Still River) | Winchester, Town of (PDF) (34 pp, 1.1 MB) | CT0101222 | 10/06/2016 |
| Winsted (Still River) | Winchester, Town of (PDF) (42 pp, 944 K) | CT0101222 | 10/18/2005 |
| Woodstock (May Brook) | Rogers Corporation (PDF) (12 pp, 114 K) | CT0021504 | 02/23/2009 |