Exhibit 21.1

Aris Water Solutions, Inc.

List of Subsidiaries

Jurisdiction of

Name

    

Organization

829 Martin County Pipeline, LLC

Texas

Clean H2O Technologies, LLC

Delaware

Solaris Midstream DB-NM, LLC

Delaware

Solaris Midstream DB-TX, LLC

Delaware

Solaris Midstream Holdings, LLC

Delaware

Solaris Midstream MB, LLC

Delaware

Solaris Services Holdings, LLC

Delaware

Solaris Water Midstream, LLC

Delaware

Solaris Water Midstream Services, LLC

Delaware