Exhibit 21.1
SUBSIDIARIES OF EQUITRANS MIDSTREAM CORPORATION
(as of December 31, 2020)
| 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 Corporation | Delaware | |||||||
| EQM Midstream Finance Corporation | Delaware | |||||||
| EQM Midstream Management LLC | Delaware | |||||||
| EQM Midstream Partners, LP | Delaware | |||||||
| EQM Midstream Services, LLC | Delaware | |||||||
| EQM Olympus Midstream LLC | Delaware | |||||||
| EQM Poseidon Midstream LLC | Delaware | |||||||
| EQM West Virginia Midstream LLC | Delaware | |||||||
| EQM VE II Access, LLC | Delaware | |||||||
| EQM VG, LLC | Delaware | |||||||
| Eureka Midstream Holdings, LLC | Delaware | |||||||
| Eureka Land, LLC | Delaware | |||||||
| Eureka Midstream, LLC | Delaware | |||||||
| Eureka Services Intermediate, LLC | Delaware | |||||||
| Eureka Services, LLC | Delaware | |||||||
| Hornet Midstream Holdings, LLC | Delaware | |||||||
| Hornet Midstream Pipeline, LLC | Delaware | |||||||
| Equitrans Gathering Holdings, LLC | Delaware | |||||||
| Equitrans Investments, LLC | Delaware | |||||||
| Equitrans Midstream Holdings, LLC | Delaware | |||||||
| Equitrans Services, LLC | Delaware | |||||||
| Equitrans, L.P. | Pennsylvania | |||||||
| Equitrans Transaction Sub GP, LLC | Delaware | |||||||
| Equitrans Water Services (PA), LLC | Delaware | |||||||
| Equitrans Water Services (OH), LLC | Delaware | |||||||
| MVP Holdco, LLC | Delaware | |||||||
| Rager Mountain Storage Company LLC | Delaware | |||||||
| RM Partners LP | Delaware | |||||||
| RM Operating LLC | Delaware | |||||||
| Strike Force Midstream Holdings LLC | Delaware | |||||||
| Strike Force Midstream LLC | Delaware | |||||||
| Strike Force East LLC | Delaware | |||||||
| Strike Force South LLC | Delaware | |||||||