| | | | | | | | |
| Entity | | Jurisdiction |
| EQGP Holdings, LP | | Delaware |
| EQGP Services, LLC | | Delaware |
| EQM Gathering Holdings, LLC | | Delaware |
| EQM Gathering Opco, LLC | | Delaware |
| EQM GP Corporation | | Delaware |
| EQM LP LLC | | Delaware |
| EQM Midstream Finance Corporation | | Delaware |
| EQM Midstream Management LLC | | Delaware |
| EQM Midstream Partners, LP | | Delaware |
| EQM Olympus Midstream LLC | | Delaware |
| Equitrans Gathering Holdings, LLC | | Delaware |
| Equitrans Investments, LLC | | Delaware |
| Equitrans Midstream Foundation | | Pennsylvania |
| Equitrans Services, LLC | | Delaware |
| Equitrans Transaction Sub GP, LLC | | Delaware |
| Equitrans Water Services (PA), LLC | | Delaware |
| Equitrans Water Services (OH), LLC | | Delaware |
| Equitrans, L.P. | | Pennsylvania |
| Eureka Land, LLC | | Delaware |
| Eureka Midstream Holdings, LLC | | Delaware |
| Eureka Midstream, LLC | | Delaware |
| Eureka Services Intermediate, LLC | | Delaware |
| Eureka Services, LLC | | Delaware |
| Hornet Midstream Pipeline, LLC | | Delaware |
| MVP Holdco, LLC | | Delaware |
| Rager Mountain Storage Company LLC | | Delaware |
| RM Partners LP | | Delaware |