Exhibit 23.2

Consent of Independent Auditors

We consent to the incorporation by reference in the following Registration Statements:

•Registration Statement (Form S-8 No. 333-231258) pertaining to the Equitrans Midstream Corporation Employee Savings Plan,

•Registration Statement (Form S-8 No. 333-228338) pertaining to the Equitrans Midstream Corporation Employee Savings Plan,

•Registration Statement (Form S-8 No. 333-228337) pertaining to the Equitrans Midstream Corporation 2018 Long-Term Incentive Plan,

•Registration Statement (Form S-8 No. 333-228340) pertaining to the Equitrans Midstream Corporation Directors’ Deferred Compensation Plan,

•Registration Statement (Form S-8 No. 333-239228) pertaining to the Equitrans Midstream Corporation 2018 Long-Term Incentive Plan,

•Registration Statement (Form S-3 No. 333-255597) pertaining to the Equitrans Midstream Corporation 2018 Dividend Reinvestment and Stock Purchase Plan,

•Registration Statement (Form S-8 No. 333-264537) pertaining to the registration of common stock under the Equitrans Midstream Corporation Employee Stock Purchase Plan,

•Registration Statement (Form S-8 No. 333-266524) pertaining to the Equitrans Midstream Corporation Amended and Restated Directors’ Deferred Compensation Plan,

•Registration Statement (Form S-3 No. 333-268219) pertaining to the registration of Common Stock, Preferred Stock and Debt Securities Offered by the Company and Common Stock offered by a Selling Securityholder, and

•Registration Statement (Form S-3 No. 333-273168) pertaining to the Equitrans Midstream Corporation Series A Perpetual Convertible Preferred Shares, Shares of Common Stock Issuable Upon Conversion of the Series A Perpetual, and Convertible Preferred Shares Offered by the Selling Shareholders;

of our report dated February 20, 2024, with respect to the financial statements of Mountain Valley Pipeline, LLC – Series A included in the Annual Report (Form 10-K) of Equitrans Midstream Corporation for the year ended December 31, 2023.

/s/ Ernst & Young LLP    

Pittsburgh, Pennsylvania

February 20, 2024