EX-21.1 2 wttr-20211231xex21d1.htm EX-21.1

Exhibit 21.1

Subsidiaries of Select Energy Services, Inc.

Entity

    

State of Formation

Select Agua Libre Midstream, LLC

​

Delaware

Complete Energy Services, LLC

​

Delaware

SES Holdings, LLC

 

Delaware

Select Energy Services, LLC

 

Delaware

Peak Oilfield Services, LLC

 

Texas

Rockwater Energy Solutions, LLC

 

Delaware

Tidal Logistics, Inc.

​

Texas

​