| Amherst | Amherst Wastewater Treatment Plant | MA0100218 | 3/30/23 - 4/28/23 |
| North Dighton | Aquaria Water LLC | MA0040193 | 3/4/25 - 4/3/25 |
| Athol | Athol Wastewater Treatment Plant | MA0100005 | 7/21/20 - 8/20/20 |
| Attleboro | Attleboro Water Pollution Control Facility | MA0100595 | 12/20/24 - 1/30/25 (extended to 2/28/25) |
| Billerica | Billerica Wastewater Treatment Facility | MA0101711 | 4/6/23 - 5/5/23 |
| Cambridge | Blackstone Steam Plant, Cambridge (Harvard University) | MA0004901 | 7/14/20 - 8/13/20 |
| Boston | Boston Ship Repair, LLC | MA0040142 | 1/12/21 - 2/10/21 |
| Brockton | Brockton Advanced Water Reclamation Facility (Co-Permittees: Towns of Abington and Whitman | MA0101010 | 1/22/25 - 2/21/25 |
| S. Deerfield | Chang Farms, Inc. | MA0040207 | 11/9/21 - 12/8/21 |
| Medway | Charles River Water Pollution Abatement Facility (Co-Permittees: Towns of Bellingham, Franklin, Medway, and Millis) | MA0102598 | 12/20/24 - 1/30/25 |
| Chelsea | Chelsea Sandwich LLC | MA0003280 | 2/10/21 - 4/12/21 |
| Chicopee | Chicopee Water Pollution Control Facility and 15 CSOs | MA0101508 | 6/28/21 - 7/27/21 (extended to 8/26/21) |
| Braintree | Citgo Braintree Terminal | MA0004782 | 10/26/20 - 11/25/20 (extended to 12/28/20) |
| Braintree | Clean Harbors of Braintree, Inc | MA0031551 | 7/20/20 - 8/19/20 |
| Dalton | Crane & Co. | MA0000671 | 3/19/21 - 4/18/21 |
| Erving | Erving Wastewater Treatment Plant #1 | MA0101516 | 6/23/21 - 7/22/21 (extended to 8/5/21) |
| Erving | Erving Wastewater Treatment Plant #2 | MA0101052 | 6/23/21 - 7/22/21 (extended to 8/5/21) |
| Fall River | Fall River Wastewater Treatment Plant | MA0100382 | 2/20/24 - 4/1/24 (extended to 4/16/24) |
| Fall River | Fall River Wastewater Treatment Plant (Revised) | MA0100382 | 1/16/25 - 2/18/25 (extended to 4/21/25) |
| Fitchburg | Fitchburg Easterly Wastewater Treatment Facility | MA0100986 | 12/15/23 - 1/28/24 |
| Gardner | Gardner Wastewater Treatment Facility (Co-Permittee: Town of Ashburnham) | MA0100994 | 7/20/20 - 8/18/20 |
| Revere | Global Companies Revere Terminal | MA0000825 | 2/10/21 - 4/12/21 |
| Byfield | Governor's Academy Wastewater Treatment Facility | MA0030350 | 5/1/23 - 5/30/23 |
| Westford | Granite State Concrete Co., Inc. | MA0020231 | 1/14/25 - 2/13/25 |
| Turners Falls | Great Falls Aquaculture, LLC | MA0110264 | 4/4/2022 - 5/3/2022 |
| Chelsea | Gulf Oil Terminal | MA0001091 | 2/10/21 - 4/12/21 |
| Groton | Hollingsworth & Vose Company, West Groton | MA0004561 | 4/1/21 - 4/30/21 |
| Walpole | Hollingsworth & Vose Company, East Walpole | MA0044996 | 11/6/20 - 12/7/20 |
| Holyoke | Holyoke Water Pollution Control Facility | MA0101630 | 4/6/23 - 5/5/23 (extended to 6/5/23) |
| Williamstown | Hoosac Water Pollution Control Facility | MA0100510 | 4/6/23 - 5/5/23 |
| Revere | Irving Oil Revere Terminal | MA0001929 | 2/10/21 - 4/12/21 |
| Athol | L.S. Starett Company | MA0001350 | 1/19/21 - 2/17/21 |
| Leominster | Leominster Water Pollution Control Facility | MA0100617 | 5/5/23 - 6/5/23 |
| Marlborough | Marlborough Easterly Wastewater Treatment Plant | MA0100498 | 11/23/21 - 12/22/21 |
| Marlborough | Marlborough Westerly Wastewater Treatment Plant | MA0100480 | 8/3/20 - 9/2/20 |
| Buzzards Bay | Massachusetts Maritime Academy | MA0024368 | 1/9/22 - 2/8/22 |
| East Boston | Massachusetts Port Authority: Logan Airport | MA0000787 | 4/12/21 - 6/11/21 (extended to 7/11/21) |
| East Boston | Massport Logan International Airport and Co-Permittees | MA0000787 | 3/21/25 - 4/21/25 |
| East Boston | Massachusetts Port Authority: Logan Airport Fire Training Facility | MA0032751 | 7/20/20 - 8/19/20 |
| East Boston | Massachusetts Port Authority: Logan Airport Fire Training Facility | MA0032751 | No PN needed - minor mod |
| Winthrop | Massachusetts Water Resources Authority Deer Island Treatment Plant | MA0103284 | 5/31/23 - 7/31/23 (extended to 11/28/23) |
| Winthrop | Massachusetts Water Resources Authority Deer Island Treatment Plant Revised Fact Sheet | MA0103284 | 5/1/24 - 5/30/24 |
| Montague | Montague Water Pollution Control Facility | MA0100137 | 3/30/23 - 5/19/23 |
| Boston | New England Aquarium | MA00031123 | 7/12/22- 8/11/22 |
| Quincy | New England Aquarium Offsite Holding Facility | MA0040380 | 7/12/22-8/11/22 |
| North Attleborough | North Attleborough Wastewater Treatment Facility (Co-permittee: Plainville) | MA0101036 | 12/20/24 - 1/30/25 (extended to 2/28/25) |
| Northampton | Northampton Wastewater Treatment Plant | MA0101818 | 3/30/23 - 4/28/23 |
| S. Lee | Onyx Specialty Papers Laurel Mill | MA0001716 | 4/1/21 - 4/30/21 |
| S. Lee | Onyx Specialty Papers Willow Mill | MA0001848 | 4/1/21 - 4/30/21 |
| Orange | Orange Wastewater Treatment Facility | MA0101257 | 7/21/20 - 8/20/20 |
| Three Rivers | Palmer Water Pollution Control Facility | MA0101168 | 3/30/23 - 5/19/23 |
| Littleton | Patriot Beverages | MA0004936 | 5/21/25 - 6/20/25 |
| Pittsfield | Pittsfield Wastewater Treatment Plant (Co-Permittees: Town of Dalton, Town of Hinsdale, Town of Lanesborough, Town of Richmond) | MA0101681 | 3/23/21 - 4/22/21 |
| Acushnet | P. J. Keating - Acushnet Facility | MA0029297 | 7/14/20 - 8/13/20 |
| Worcester | Polar Beverages | MA0040483 | 3/4/25 - 4/3/25 |
| Worcester | Polar Corporation | MA0040483 | 8/20/20 - 9/19/20 |
| Ware | Quabbin Wire & Cable Company, Inc. | MA0030571 | 7/23/20 - 8/22/20 |
| Boston | Resilience Boston (formerly Genzyme) | MA0040291 | 7/14/20 - 8/13/20 |
| Rockland | Rockland Wastewater Treatment Plant | MA0101923 | 8/25/21 - 9/23/21 |
| Templeton | Seaman Paper Company of Massachusetts, Inc. | MA0000469 | 8/13/21 - 9/13/21 |
| Cambridge | Shire Human Genetic Therapies | MA0040321 | 7/14/20 - 8/13/20 |
| Springfield | Solutia, Inc. | MA0001147 | 1/21/25 - 2/20/25 |
| Somerset | Somerset Water Pollution Control Facility | MA0100676 | 12/22/23 - 2/5/24 |
| Salem | South Essex Wastewater Treatment Facility | MA0100501 | 1/23/25 - 2/24/25 (extended to 4/10/25) |
| Quincy | Sprague Operating Resources | MA0020869 | 12/4/20 - 2/2/21 |
| Quincy | Sprague Twin Rivers Technology | MA0028037 | 12/4/20 - 2/2/21 |
| East Boston | Sunoco Logistics East Boston Terminal | MA0004006 | 2/10/21 - 4/12/21 |
| Swansea | Swansea Water District Desalination Facility | MA0103390 | 12/27/24 - 2/3/25 |
| Templeton | Templeton Wastewater Treatment Plant | MA0100340 | 7/23/20 - 8/22/20 |
| Boston | University of Massachusetts, Boston | MA0040304 | 10/16/20 - 11/16/20 |
| Webster | Webster Wastewater Treatment Facility | MA0100439 | 6/30/21 - 7/29/21 |
| Westborough | Westborough Wastewater Treatment Facility | MA0100412 | 9/16/20 - 10/16/20 |
| Westborough | Westborough Wastewater Treatment Plant | MA0100412 | 1/19/23 - 2/21/23 |
| Westfield | Westfield Water Pollution Control Plant | MA0101800 | 3/30/23 - 4/28/23 |
| Winchendon | Winchendon Water Pollution Control Facility | MA0100862 | 6/4/21 - 7/6/21 |
