List of WSA - Formal Enforcement Actions
| 34 | Smithsonian Paul E Garber Facility | 3904 Old Silver Hill Road | Suitland,MD,20746-3190 | Prince George's | | | | 09/17/2024 | Not Assigned | |
| 46 | Dickerson Generating Station/GenOn Mid-Atlantic, LLC | 21200 Martinsburg Road | Dickerson,MD,20842 | Montgomery | Penalty Settlement | Arno Laud | 07/20/2017 | 08/15/2017 | Surface Water Discharge Unauthorized | Industrial Major |
| 88 | Piney Point LLC | 17877 Piney Point Rd | Piney Point,MD,20674 | St. Mary's | Settlement Agreement | SA-14-2007 | 10/11/2013 | 09/05/2014 | Surface Water Discharge Permit | Industrial Minor |
| 88 | Piney Point LLC | 17877 Piney Point Rd | Piney Point,MD,20674 | St. Mary's | Settlement Agreement | Eisgruber | 10/11/2013 | 09/05/2014 | Surface Water Discharge Permit | Industrial Minor |
| 120 | Tradepoint Atlantic | 1600 Sparrows Point Blvd | Baltimore,MD,21219 | Baltimore | Consent Order | SAP-15-2242 | 04/09/2015 | 07/11/2017 | Surface Water Discharge Permit | Industrial Major |
| 143 | Ascension Saint Agnes Hospital | 900 S Caton Ave | Baltimore,MD,21229 | Baltimore City | Penalty Settlement | PS-13-1746 | 08/21/2012 | 10/23/2012 | Notice of Intent | Notice of Intent (Construction) |
| 167 | GAF | 1500 S Ponca St | Highlandtown,MD,21224 | Baltimore City | Penalty Settlement | Bull, Kevin | 03/04/2015 | 03/20/2015 | Surface Water Discharge Unauthorized | Industrial Minor |
| 167 | GAF | 1500 S Ponca St | Highlandtown,MD,21224 | Baltimore City | Penalty Settlement | PS-15-2226 | 03/04/2015 | 03/20/2015 | Surface Water Discharge Unauthorized | Industrial Minor |
| 229 | Heritage at Silver Spring Titleholder, LLC | 8021 Georgia Ave | Silver Spring,MD,21910 | Montgomery | Consent Order | CO-15-2138 | 09/09/2014 | 12/23/2014 | Notice of Intent | Industrial Minor |
| 503 | Father Martin's Ashley | 800 Tydings Lane | Havre De Grace,MD,21078 | Harford | Stipulated Penalty | SP-22-2789 | 05/02/2022 | 05/20/2022 | Groundwater Discharge Permit | Municipal Minor |