Equitrans Midstream Corporation owns, operates, acquires, and develops midstream assets in the Appalachian Basin. The company operates through Gathering, Transmission, and Water segments. It operates dry gas gathering systems of high-pressure gathering lines and FERC-regulated interstate pipelines and storage systems. In addition, the company operates water pipelines and other facilities that deliver fresh water from local municipal water authorities, the Monongahela River, the Ohio River, local reservoirs, and several regional waterways. Equitrans Midstream Corporation was incorporated in 2018 and is headquartered in Canonsburg, Pennsylvania. As of July 22, 2024, Equitrans Midstream Corporation operates as a subsidiary of EQT Corporation.