Complaint Date | | Status | | Case |
| | Closed | | (CWA-03-2020-0049DW) Shawn Claar, CWA, Administrative Order for Compliance on Consent |
| | Closed | | (CWA-03-2020-0052DN) Balfour Beatty Construction, LLC, CWA, Administrative Order on Consent |
| | Closed | | (CWA-03-2020-0058) Construction Specialties, Inc., CWA, CAFO |
| | Active | | (CWA-03-2020-0061CW) Tangier Oil Company, Inc. |
| | Active | | (CWA-03-2020-0067DN) Shenandoah Municipal Sewer Authority |
| | Closed | | (CWA-03-2020-0072) Forrester Construction Co., CWA, CAFO |
| | Closed | | (CWA-03-2020-0081) Delstar Technologies, Inc. d/b/a SWM International, CWA, ESA |
| | Active | | (CWA-03-2020-0088DW) Boyd Farm, LLC |
| | Active | | (CWA-03-2020-0089DW) Frazier T. Boyd, III |
| | Closed | | (CWA-03-2020-0093) South Capitol Bridgebuilders, CWA, SCAFO |
| | Closed | | (CWA-03-2020-0097) Midatlantic Realty Partners, LLC, CWA, CAFO |
| | Closed | | (CWA-03-2020-0103) Guttman Realty Company d/b/a Bulk Terminal Storage, CWA, CAFO |
| | Closed | | (CWA-03-2020-0104) Marine Oil Service, Inc., CWA, ESA |
| | Closed | | (CWA-03-2020-0105DN) City of Carbondale, CWA Administrative Compliance Order on Consent |
| | Active | | (CWA-03-2020-0109DW) Frazier T. Boyd, III - Shannon Hill Road |
| | Closed | | (CWA-03-2020-0113) ISE America, Inc. CWA, CAFO |
| | Closed | | (CWA-03-2020-0117DN) ISE America, Inc., CWA, Administrative Order on Consent |
| | Closed | | (CWA-03-2020-0123) Brock Resources, Inc., d/b/a Brock Oil Company, CWA, CAFO |
| | Active | | (CWA-03-2020-0138DN) Lehigh White Cement Company |
| | Closed | | (CWA-03-2021-0002) Clark Construction Group, LLC, Square 696 Site, CWA, CAFO |
| | Active | | (CWA-03-2021-0006DN) Blessing Greenhouses and Compost Facility, Inc. |
| | Closed | | (CWA-03-2021-0015) Lehigh White Cement Company, CWA, CAFO |
| | Active | | (CWA-03-2021-0017DW) Waco Oil and Gas Co., Inc. |
| | Closed | | (CWA-03-2021-0018) Centre Concrete Company, CWA, CAFO |
| | Closed | | (CWA-03-2021-0019DN) Centre Concrete Company, CWA, Administrative Order on Consent |
| | Active | | (CWA-03-2021-0027DN) Pennsylvania Turnpike Commission |
| | Active | | (CWA-03-2021-0028DW) Gary Powers |
| | Closed | | (CWA-03-2021-0032) Ventura Foods, LLC, CWA, ESA |
| | Active | | (CWA-03-2021-0035DN) Overhead Door Corporation, CWA, Administrative Order on Consent |
| | Active | | (CWA-03-2021-0039DN) City of Pittsburgh and Pittsburgh Water and Sewer Authority |
| | Active | | (CWA-03-2021-0044DN) York City Sewer Authority and City of York |
| | Closed | | (CWA-03-2021-0048) Overhead Door Corporation, CWA, CAFO |
| | Closed | | (CWA-03-2021-0049DN) Joel Hetrick, Hetrickdale Farms, Adminstrative Order on Consent |
| | Closed | | (CWA-03-2021-0052) Monumental Concrete, CWA, CAFO |
| | Active | | (CWA-03-2021-0053DN) City of Martinsburg, WWTP |
| | Closed | | (CWA-03-2021-0054DN) City of Martinsburg, CWA, Administrative Order on Consent |
| | Active | | (CWA-03-2021-0060DN) Lehigh Cement Company |
| | Closed | | (CWA-03-2021-0061) Lehigh Cement Company LLC, CWA, CAFO |
| | Closed | | (CWA-03-2021-0062) Vicinity Energy, CWA, ESA |
| | Closed | | (CWA-03-2021-0071) Union Carbide Corporation, CWA, CAFO |
| | Active | | (CWA-03-2021-0078DN) Concrete Pipe and Precast, LLC |
| | Closed | | (CWA-03-2021-0079) Concrete Pipe and Precast, LLC |
| | Closed | | (CWA-03-2021-0083) Tech Met, Inc., CWA, CAFO |
| | Closed | | (CWA-03-2021-0085DW) Mr. Joe Reynolds |
| | Closed | | (CWA-03-2021-0100) WVA Manufacturing, LLC |
| | Active | | (CWA-03-2021-0104FF) John F. Kennedy Center for the Performing Arts |
| | Active | | (CWA-03-2021-0110DS) Clarksburg Water Board |
| | Closed | | (CWA-03-2022-0003) Heath Oil, Inc. |
| | Closed | | (CWA-03-2022-0013) MarkWest Liberty Midstream & Resources, LLC, Houston Gas Plant |
| | Closed | | (CWA-03-2022-0014) Buckeye Terminals, LLC |
| | Closed | | (CWA-03-2022-0017) Potomac German Auto, Inc. and LKQ Northeast, Inc. c/o LKQ Corporation |
| | Active | | (CWA-03-2022-0018DN) Red Hill Utility, LLC |
| | Active | | (CWA-03-2022-0019DN) Amsted Graphite Materials, LLC |
| | Closed | | (CWA-03-2022-0020) Amsted Graphite Materials, LLC |
| | Active | | (CWA-03-2022-0021DN) Hanover Foods Corporation |
| | Active | | (CWA-03-2022-0022DW) Gary Lane and Chameleon LLC |
| | Active | | (CWA-03-2022-0026DN) City of Carbondale |
| | Closed | | (CWA-03-2022-0029) Red Hill Utility, LLC |
| | Active | | (CWA-03-2022-0031DN) Superior Concrete Materials, Inc. |
| | Closed | | (CWA-03-2022-0032) Superior Concrete Materials, Inc. |
| | Active | | (CWA-03-2022-0039DW) Paul Goodwin |
| | Active | | (CWA-03-2022-0040DN) Hiway MHC, LLC |
| | Active | | (CWA-03-2022-0042DN) Town of Selbyville |
| | Active | | (CWA-03-2022-0055DN) ZQRIC, LLC |
| | Closed | | (CWA-03-2022-0059DN) Top Drawer, LLC - Cypress Pointe A |
| | Closed | | (CWA-03-2022-0064) City of Martinsburg |
| | Closed | | (CWA-03-2022-0070) Borough of Fleetwood |
| | Closed | | (CWA-03-2022-0084DN) Kokosing Construction Company, Inc. |
| | Closed | | (CWA-03-2022-0090) Central Wayne Regional Authority |
| | Closed | | (CWA-03-2022-0097) Moorefield/Hardy County Wastewater Authority |
| | Active | | (CWA-03-2022-0117DN) Board of County Commissioners, Washington County, Maryland |
| | Closed | | (CWA-03-2022-0123DW) Lackawanna College |
| | Closed | | (CWA-03-2023-0001) Central Hampshire Public Service District, Frenchburg Wastewater Treatment Plant |
| | Closed | | (CWA-03-2023-0004) Frankfort Public Service District |
| | Active | | (CWA-03-2023-0006DN) The Washington Marina Company |
| | Closed | | (CWA-03-2023-0009) Knouse Foods Cooperative, Inc. |
| | Active | | (CWA-03-2023-0011DN) Chemalloy Company LLC |
| | Closed | | (CWA-03-2023-0022) Powhatan County, Dutoy Creek Wastewater Treatment Plant |
| | Active | | (CWA-03-2023-0025DN) The Chemours Company FC, LLC, Washington Works |
| | Closed | | (CWA-03-2023-0028DN) North Middleton Township |
| | Closed | | (CWA-03-2023-0030) Chemalloy Company, LLC |
| | Closed | | (CWA-03-2023-0041) Meenan Oil Company |
| | Active | | (CWA-03-2023-0051DW) Panhandle Homes of Berkeley County, Inc. |
| | Closed | | (CWA-03-2023-0055) United Iron & Metal, LLC |
| | Active | | (CWA-03-2023-0058DN) Borough of Tamaqua and Tamaqua Borough Authority |
| | Active | | (CWA-03-2023-0077DN) City of Williamsport, PA |
| | Active | | (CWA-03-2023-0078CW) CSX Transportation, Inc., Sandstone, WV Train Derailment Site |
| | Closed | | (CWA-03-2023-0097) United States Steel Corporation |
| | Closed | | (CWA-03-2023-0103) Watco Transloading, L.L.C. |
| | Active | | (CWA-03-2023-0113DN) Mid-Centre County Authority |
| | Closed | | (CWA-03-2023-0114) Schell Outer Banks LLC, Schell Brothers LLC, and David G. Horsey & Sons, Inc. |
| | Closed | | (CWA-03-2023-0115) Schell Outer Banks LLC, Governors Lewes, LP, and David G. Horsey & Sons, Inc. |
| | Closed | | (CWA-03-2024-0001) Berg Brothers Recycling, Inc. |
| | Active | | (CWA-03-2024-0003) State of Delaware, Delaware Department of Transportation |
| | Closed | | (CWA-03-2024-0005) Panhandle Homes of Berkeley County, Inc. |
| | Active | | (CWA-03-2024-0006DN) Boone’s Estates MHC, LLC and Horizon Land Management, LLC |
| | Active | | (CWA-03-2024-0007DN) Lyons Creek MHC, LLC and Horizon Land Management, LLC |
| | Active | | (CWA-03-2024-0008DN) Maryland Manor MHC, LLC and Horizon Land Management, LLC |
| | Active | | (CWA-03-2024-0009DN) Patuxent MHC, LLC and Horizon Land Management, LLC |
| | Active | | (CWA-03-2024-0016DN) Delaware Department of Transportation |