| R2-2022-0010 | Order No. R2-2022-0010 Waste Discharge Requirements for City of Calistoga, Calistoga City Dunaweal Wastewater Treatment Plant and its Collection System | Order | Napa County | March | 2022 |
| R2-2022-1002 | Order No. R2-2022-1002 Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for Lennar Homes of California, Inc. | Enforcement | Alameda County | April | 2022 |
| R2-2022-0014 | Order No. R2-2022-0014 Waste Discharge Requirements for County of Santa Clara | Order | Santa Clara | April | 2022 |
| R2-2022-0015 | Order No. R2-2022-0015 Order regulates oyster shell mining operations and the discharge of sediment and water from these operations by Lind Tug and Barge, Inc. (Lind), in South San Francisco Bay. | Order | San Mateo | April | 2022 |
| R2-2022-0012 | Order No. R2-2022-0012 Updated Waste Discharge Requirements and Rescission of Order No. 01-029 for Highway 237 Landfill | Order | Santa Clara County | April | 2022 |
| R2-2022-0013 | Order No. R2-2022-0013 Tentative Waste Discharge Requirements Order for Pacific 42, LLC | Order | Contra Costa County | April | 2022 |
| R2-2022-0016 | Order No. R2-2022-0016 Waste Discharge Requirements for Schnitzer Steel Industries, Inc. | Order | Alameda County | May | 2022 |
| R2-2022-0017 | Order No. R2-2022-0017 General Waste Discharge Requirements and Water Quality Certification for Projects under the Petaluma River and Sonoma Creek Levee Maintenance Program Administered by the Sonoma Resource Conservation District | Order | Sonoma County | May | 2022 |
| R2-2022-0018 | Order No. R2-2022-0018 Municipal Regional Stormwater NPDES Permit No. CAS612008 | Permit | Various | May | 2022 |
| R2-2022-0020 | Order No. R2-2022-0020 Waste Discharge Requirements for Central Contra Costa Sanitary District, Central Contra Costa Sanitary District Wastewater Treatment Plant and its Wastewater Collection System | Order | Contra Costa County | June | 2022 |
