Connecticut NPDES Permits
Authorization: The state of Connecticut has assumed the NPDES program from the federal government. The state issues its permits through the Connecticut Department of Energy and Environmental Protection. Exit
On this page:
On other pages:
- Connecticut Draft Individual Permits
- Connecticut Final Individual Permits
- EPA NPDES Permit Forms & Attachments for New England
- NPDES Water Permit Program in New England
- NPDES Stormwater Permit Program in New England
- View NPDES Permits for All States
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Draft General Permits
- Draft General Permit for the Discharge of Wastewaters from Significant Industrial Users (SIU)
Comment Period: 01/11/2019 - 02/11/2019 - Draft General Permit for Discharges of Miscellaneous Sewer Compatible (MISC) Wastewater from Industrial Users
Comment Period: 01/11/2019 - 02/11/2019 - Draft Proposed General Permit for Nitrogen Discharges
Comment Period: 06/12/2018 - 07/12/2018 - Draft General Permit for the Discharge of Stormwater and Dewatering Wastewaters from Construction Activities
Comment Period: 03/29/2018 - 04/29/2018 - Draft General Permit for the Discharge of Stormwater Associated with Industrial Activity
Comment Period: 03/29/2018 - 04/29/2018 - Draft General permit for the Discharge of Wastewaters from Categorical Industrial Users to a Public Owned Treatment Works (POTW)
Comment Period: 03/23/2018 - 04/23/2018 - Draft General Permit for Miscellaneous Discharges of Sewer Compatible (MISC) Wastewater
Comment Period: 03/23/2018 - 04/23/2018- Draft General Permit for Miscellaneous Discharges of Sewer Compatible (MISC) Wastewater
Comment Period: 09/27/2016 - 10/27/2016
- Draft General Permit for Miscellaneous Discharges of Sewer Compatible (MISC) Wastewater
- Draft General Permit for the Discharge of Low Flow Water Treatment Wastewater
Comment Period: 12/27/2017 - 01/27/2018 - Draft Comprehensive General Permit to Surface Water & Groundwater
Comment Period: 09/27/2016 - 10/27/2016 - Draft General Permit for Point Source Discharges to Waters of the State from the Application of Pesticides
Comment Period: 09/27/2016 - 10/27/2016 - Draft General Permit for the Discharge of Groundwater Remediation Wastewater
Comment Period: 09/27/2016 - 10/27/2016 - Draft General Permit to Discharge from Subsurface Sewage Disposal Systems Serving Existing Facilities (PDF) (30 pp, 630 K)
Draft Pretreatment General Permits
| City / Town | Applicant / Facility Name | Permit Number | Comment Period Dates |
|---|---|---|---|
| Stafford Springs | 3M Purification Inc. | SP0000060 | 12/10/2015 - 01/10/2016 |
| Woodstock | Crabtree & Evelyn, Ltd. | SP0002299 | 12/01/2015 - 12/31/2015 |
| Danbury | Goodrich Corporation | SP0000006 | 11/24/2015 - 12/24/2015 |
| West Haven | Enthone, Inc. | SP0001123 | 08/05/2015 - 09/05/2015 |
| New London | Sheffield Pharmaceuticals, LLC | SP0002442 | 08/04/2015 - 09/04/2015 |
| Bethel | Vanderbilt Chemicals, LLC (PDF) (20 pp, 815 K) | SP0000110 | 11/26/2014 - 12/26/2014 |
| Watertown | Global Steering Systems, LLC (PDF) (18 pp, 746 K) | SP0002182 | 10/28/2014 - 11/28/2014 |
| Newington | Beacon Industries (PDF) (16 pp, 618 K) | SP0000624 | 06/18/2014 - 07/17/2014 |
| Stratford | Sikosky Aircraft Corporation (PDF) (25 pp, 600 K) | SP0000551 | 05/30/2014 - 06/30/2014 |
| Mystic | Mystic Aquarium (PDF) (14 pp, 526 K) | SP0002426 | 05/20/2014 - 06/20/2014 |
| Thomaston | Unimetal Surface Finishing, LLC (PDF) (17 pp, 607 K) | SP0002461 | 12/13/2013 - 01/13/2014 |
| West Hartford | United Tool and Die Company (PDF) (11 pp, 497 K) | SP0000039 | 10/16/2013 - 11/16/2013 |
| Stafford Springs | Warren Corporation (PDF) (14 pp, 472 K) | SP0000456 | 10/01/2013 - 11/01/2013 |
| New Britain | Peter Paul Electronics Co. Inc. (PDF) (15 pp, 432 K) | SP0000778 | 08/14/2013 - 09/12/2013 |
| Plainville | Plainville Plating Company, Inc. (PDF) (15 pp, 437 K) | SP0002385 | 06/25/2013 - 07/24/2013 |
| Waterbury | Ansonia Specialty Metals, LLC (PDF) (19 pp, 423 K) | SP0002215 | 06/21/2013 - 07/20/2013 |
| Cheshire | Consolidated Industries, Inc. (PDF) (15 pp, 482 K) | SP0002317 | 06/21/2013 - 07/20/2013 |
| South Windsor | Delisle Inc., d/b/a Metals Testing Company, Inc. (PDF) (17 pp, 558 K) | SP0000380 | 05/21/2013 - 06/19/2013 |
| Danbury | Bedoukain Research, Inc. (PDF) (20 pp, 635 K) | SP0000004 | 02/05/2013 - 03/06/2013 |
| West Haven | Seaboard Metal Fishing Co., Inc. (PDF) (17 pp, 502 K) | SP0000127 | 02/04/2013 - 03/05/2013 |
| Ellington | Natural Country Farms, Inc. (PDF) (8 pp, 494 K) | SP0002418 | 12/21/2012 - 01/20/2013 |
| Wolcott | Mattatuck International Scrap Metal (PDF) (19 pp, 633 K) | SP0002324 | 12/21/2012 - 01/20/2013 |
| Danbury | R.S.A Corporation (PDF) (14 pp, 397 K) | SP0001473 | 11/30/2012 - 12/30/2012 |
| Montville | Rand-Whitney Containerboard, L.P. (PDF) (40 pp, 876 K) | SP0002032 | 09/26/2012 - 10/26/2012 |
| Easton | Eastern Reservoir Water Treatment Plant (PDF) (12 pp, 377 K) | SP0002458 | 08/24/2012 - 09/24/2012 |
| Shelton | D.W. Loiselle Water Treatment Plant (PDF) (14 pp, 329 K) | SP0002459 | 08/24/2012 - 09/24/2012 |
| Stratford | Ashcroft Inc. (PDF) (12 pp, 360 K) | SP0000023 | 08/23/2012 - 09/23/2012 |
| Hartford | H.N.S. Management Company, Inc. (PDF) (14 pp, 229 K) | SP0002218 | 08/22/2012 - 09/22/2012 |
| Newington | Kohler Mix Specialties, LLC (PDF) (14 pp, 341 K) | SP0002278 | 08/22/2012 - 09/22/2012 |
| Windsor | Westinghouse Electric Company, LLC (PDF) (11 pp, 307 K) | SP0002171 | 08/08/2012 - 09/08/2012 |
| Stafford | TTM Printed Circuit Group, Inc. (PDF) (17 pp, 442 K) | SP0000069 | 08/02/2012 - 09/02/2012 |
| Stafford | TTM Printed Circuit Group, Inc. (PDF) (14 pp, 404 K) | SP0001229 | 08/02/2012 - 09/02/2012 |
| Sprague | Fusion Paperboard Connecticut, LLC (PDF) (18 pp, 536 K) | SP0002311 | 07/31/2012 - 08/31/2012 |
| Hartford | AmeriPride Services, Inc. (PDF) (11 pp, 104 K) | SP0002312 | 07/27/2012 - 08/25/2012 |
| Watertown | Global Steering Systems, LLC (PDF) (13 pp, 394 K) | SP0002182 | 07/24/2012 - 08/24/2012 |
| Stratford | Bridgeport Fittings, Incorporated (PDF) (17 pp, 365 K) | SP0000680 | 06/28/2012 - 07/28/2012 |
| Cheshire | Microtech, Inc. (PDF) (13 pp, 352 K) | SP000026 | 06/28/2012 - 07/28/2012 |
| Mashantucket | Lake of Isles (PDF) (15 pp, 351 K) | SP0002408 | 06/27/2012 - 07/27/2012 |
| New Britain | Guida-Siebert Dairy Company (PDF) (13 pp, 144 K) | SP0002201 | 05/18/2012 - 06/18/2012 |
| Hamden | Porcelen Limited, Connecticut LLC (PDF) (13 pp, 131 K) | SP0000656 | 04/24/2012 - 05/24/2012 |
| Farmington | EBM-PAPST Inc. (PDF) (11 pp, 124 K) | SP0002406 | 04/12/2012 - 05/12/2012 |
| Stafford Springs | 3M Purification Inc. (PDF) (11 pp, 104 K) | SP0000060 | 04/03/2012 - 05/03/2012 |
| Watertown | Truelove & Maclean Inc. (PDF) (11 pp, 112 K) | SP0001326 | 04/03/2012 - 05/03/2012 |
| Norwich | Phelps Dodge Indistries, Inc. (PDF) (13 pp, 155 K) | SP0002326 | 03/23/2012 - 04/23/2012 |
| Bristol | Metal Fishing Technologies Inc. (PDF) (12 pp, 120 K) | SP0001442 | 01/01/2012 - 02/01/2012 |
| City / Town | Applicant / Facility Name | Permit Number | Comment Period Dates |
Final General Permits
Final General Permits Issued by EPA
Final General Permits Issued by the State of Connecticut
- Discharge of Stormwater and Dewatering Wastewaters Associated with Construction Activities, Issued: May 31, 2018 (PDF) (79 pp, 642 K)
- Discharge of Stormwater Associated with Industrial Activity, Issued: May 31, 2018 (PDF) (78 pp, 644 K)
- Discharge of Stormwater from the Department of Transportation Separate Storm Sewer Systems, Issued: May 24, 2018 (PDF) (73 pp, 1.2 MB)
- Discharge of Wastewaters from Categorical Industrial Users to a Publicly Owned Treatment Works (POTW), Issued: May 3, 2018 (PDF) (50 pp, 887 K)
- Miscellaneous Discharges of Sewer Compatible (MISC) Wastewater, Issued: May 3, 2018 (PDF) (73 pp, 1.5 MB)
- Discharge of Stormwater Associated with Commercial Activity, Issued: May 15, 2017 (PDF) (17 pp, 154 K)
- Point Source Discharges to Waters of the State from the Application of Pesticides, Issued: May 15, 2017 (PDF) (22 pp, 198 K)
- Discharge from Subsurface Sewage Disposal Systems Serving Existing Facilities, Issued: May 9, 2012 (PDF) (30 pp, 631 K)
- Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems, Re-Issued: January 9, 2009 (PDF) (22 pp, 462 K)
| City / Town (Receiving Water) | Applicant / Facility Name | Permit Number | Date of Issuance |
|---|---|---|---|
| Bridgeport (POTW) | Lacey Manufacturing Company LLC (PDF) (7 pp, 327 K) | CTCIU0026 | 02/15/2017 |
| Manchester (POTW) | Praxair Surface Technologies, Inc (PDF) (67 pp, 283 K) | CTCIU0022 | 10/18/2017 |
| Newington (POTW) | Component Technologies, Inc. [Modification] (PDF) (8 pp, 363 K) | CTCIU0028 | 10/18/2017 |
| Newington (POTW) | Component Technologies, Inc. (PDF) (7 pp, 327 K) | CTCIU0028 | 03/31/2017 |
| South Windsor (POTW) | Aerospace Testing Laboratory, Inc. (PDF) (7 pp, 327 K) | CTCIU0027 | 03/29/2017 |
| Watertown (POTW) | Utitec Inc. (PDF) (8 pp, 286 K) | CTCIU0033 | 03/08/2019 |
| West Hartford (POTW) | The United Tool and Die Company [Modification] (PDF) (8 pp, 386 K) | CTCIU0032 | 03/08/2019 |
| West Hartford (POTW) | The United Tool and Die Company (PDF) (9 pp, 370 K) | CTCIU0032 | 11/08/2018 |
| Bridgeport (Groundwater Remediation Wastewater) | Sporting Goods Properties Inc - Lake Success Munitions Pond Project (PDF) (4 pp, 161 K) | CTRSW0001 | 11/07/2018 |
| Bethel | Culligan Water Company of CT, Inc. (PDF) (14 pp, 460 K) | SP0000993 | 01/15/2013 |
| Branford | Cintas Corporation (PDF) (9 pp, 499 K) | SP0000093 | 05/12/2012 |
| Bridgeport | Reliable Plating and Polishing Company, Inc. (PDF) (12 pp, 738 K) | SP0000106 | 06/11/2014 |
| Bristol | Metal Fishing Technology, LLC (PDF) (10 pp, 94 K) | SP0001442 | 05/29/2012 |
| Centerbrook | Tower Laboratories, Ltd. (PDF) (13 pp, 149 K) | SP0002414 | 01/18/2013 |
| Cheshire | Consolidated Industries Acquisition Corporation (PDF) (13 pp, 746 K) | SP0002317 | 08/07/2013 |
| Cheshire | Fujikuin of America (PDF) (10 pp, 92 K) | SP0002291 | 04/17/2012 |
| Danbury | Barden Company, The (PDF) (10 pp, 98 K) | SP0001059 | 04/25/2012 |
| Danbury | Bedoukian Research, Inc. (PDF) (24 pp, 1.4 MB) | SP0000004 | 09/13/2013 |
| Danbury | R.S.A. CORP (PDF) (12 pp, 764 K) | SP0001473 | 01/18/2013 |
| East Granby | Delta Industries, Inc. (PDF) (12 pp, 667 K) | SP0001362 | 08/27/2012 |
| Ellington | Natural Country Farms, Inc. (PDF) (6 pp, 391 K) | SP0002418 | 02/05/2013 |
| Groton | Electric Boat Company (PDF) (7 pp, 317 K) | SP0000440 | 10/09/2012 |
| Hartford | AmeriPride Services, Inc. (PDF) (8 pp, 437 K) | SP0002312 | 06/12/2012 |
| Hartford | H.N.S Management Company, Inc. (PDF) (8 pp, 474 K) | SP0002218 | 10/01/2012 |
| Meriden (Connecticut River) | AGC Incorporated (PDF) (8 pp, 457 K) | SP0000120 | 06/25/2012 |
| Milford (Housatonic River) | Devon Power, LLC (PDF) (3 pp, 235 K) | SP0002444 | 04/05/2012 |
| Montville | Rand-Whitney Containerboard, L.P. (PDF) (54 pp, 3.4 MB) | SP0002032 | 11/15/2012 |
| New Britain | Guida-Siebert Dairy Company (PDF) (7 pp, 418 K) | SP0002201 | 07/17/2012 |
| New Britain | Pape Electroplating Company (PDF) (15 pp, 807 K) | SP0000059 | 08/22/2013 |
| New London | Faria Limited (PDF) (15 pp, 889 K) | SP0002442 | 09/13/2013 |
| New London | USCG Academy (PDF) (15 pp, 65 K) | SP0002235 | 10/27/2010 |
| Newington | Component Technologies, Inc. (PDF) (14 pp, 106 K) | SP0001454 | 04/05/2012 |
| Newington | Kohler Mix Specialties, LLC (PDF) (12 pp, 221 K) | SP0002278 | 10/09/2012 |
| Norwich | Phelps Dodge Industries, Inc. dba Freeport-McMoRan Copper Products (PDF) (7 pp, 442 K) | SP0002326 | 05/18/2012 |
| Plainville | Plainville Plating Company, Inc. (PDF) (12 pp, 661 K) | SP0002385 | 08/06/2013 |
| Ridgefield | Boehringer Ingelheim Pharmaceuticals, Inc. (PDF) (17 pp, 874 K) | SP0000021 | 10/25/2013 |
| South Windsor | Aerospace Testing Laboratory (PDF) (7 pp, 84 K) | SP0002430 | 04/06/2012 |
| South Windsor | Delisle Inc. (PDF) (14 pp, 888 K) | SP0000380 | 07/22/2013 |
| Sprague | Fusion Paperboard Connecticut, LLC (PDF) (17 pp, 217 K) | SP0002311 | 09/24/2012 |
| Stafford Springs | 3M Purification, Inc. (PDF) (9 pp, 90 K) | SP0000060 | 05/22/2012 |
| Stratford | Ashcroft, Inc.(PDF) (10 pp, 276 K) | SP0000023 | 10/09/2012 |
| Stratford | Unifirst Corporation (PDF) (10 pp, 388 K) | SP0001109 | 02/28/2014 |
| Waterbury | GBC Metals, LLC (PDF) (10 pp, 502 K) | SP0001332 | 06/25/2013 |
| Waterbury | Mirror Polishing & Plating Company (PDF) (8 pp, 481 K) | SP0001930 | 04/17/2012 |
| Watertown | Philson, Inc. (PDF) (13 pp, 753 K) | SP0000019 | 04/25/2014 |
| Watertown | Truelove & Maclean (PDF) (9 pp, 517 K) | SP0001326 | 05/17/2012 |
| West Hartford | Har-Conn Chrome Company, The (PDF) (14 pp, 457 K) | SP0002230 | 02/28/2014 |
| West Haven | Seaboard Metal Fishing Co., Inc. (PDF) (9 pp, 583 K) | SP0000127 | 03/22/2013 |
| West Haven | Sylvian R. Shemits Designs, Inc. (PDF) (9 pp, 283 K) | SP0002179 | 10/07/2013 |
| Windsor Locks | Inland Technologies International Limitied/CT Airport Authority (PDF) (12 pp, 660 K) | SP0002364 | 03/04/2014 |
| Windsor Locks | United Parcel Service, Inc. (PDF) (9 pp, 541 K) | SP0002365 | 03/19/2014 |
| Wolcott | Mattatuck Industrial Scrap Metal, Inc. (PDF) (17 pp, 369 K) | SP0002324 | 03/01/2013 |
| City / Town (Receiving Water) | Applicant / Facility Name | Permit Number | Date of Issuance |
EPA New England Issued Permits for Tribal Lands
- General Permit for Storm Water Discharges from Regulated Small Municipal Separate Storm Sewer Systems, MS4s (PDF) (56 pp, 265 K)
Please note that stormwater permit information is available at our NPDES Stormwater Permit Program in New England page.