| 173-221-010 | Purpose and scope. |
| 173-221-020 | Policy. |
| 173-221-030 | Definitions. |
| 173-221-040 | Domestic wastewater facility discharge standards. |
| 173-221-050 | Alternative domestic wastewater facility discharge standards and effluent limitations. |
| 173-221-100 | Severability. |