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

SES Sub A, LLC

​

Delaware

SES Sub B, LLC

​

Delaware

SES Sub C, LLC

​

Delaware

Select Energy Solutions (RW), Inc.

​

Delaware

Navy Holdings, Inc.

​

Delaware

Navy Holdco, LLC

​

Delaware

New Heckmann Water Resources Corporation

​

Delaware

New Heckmann Water Resources (CVR), Inc.

​

Delaware

SES Intermediate Holdings, LLC

​

Delaware

Affirm Oilfield Services, LLC

​

Texas

Heckmann Water Resources, LLC

​

Delaware

Heckmann Water Resources (CVR), LLC

​

Delaware

NES Water Solutions, LLC

​

Delaware

Guard Drilling Mud Disposal, LLC

​

Delaware

China Water and Drinks, LLC

​

Delaware

Badlands Power Fuels, LLC

​

Delaware

Nuverra Ohio Disposal LLC

​

Delaware

1960 Well Services, LLC

​

Ohio

Badlands Power Fuels, LLC

​

North Dakota

Clearwater Three LLC

​

Ohio

Clearwater Five LLC

​

Ohio

Clearwater Solutions LLC

​

Ohio

HEK Water Solutions, LLC

​

Delaware

Nuverra Total Solutions, LLC

​

Delaware

Heckmann Woods Cross, LLC

​

Utah

Nuverra Rocky Mountain Pipeline, LLC

​

Delaware

Breakwater Energy Services, LLC

​

Texas

Breakwater Energy Partners, LLC

​

Texas

Breakwater Midstream, LLC

​

Texas

Big Spring Recycling System, LLC

​

Delaware

Landtech Enterprises, LLC

​

North Dakota

Badlands Leasing, LLC

​

North Dakota

Ideal Oilfield Disposal, LLC

​

North Dakota

Select Water Reuse, LLC

​

Delaware

Select Western Company of Texas, Inc.

​

Texas

International Western Company, Inc.

​

North Dakota

Benchmark Energy Products, LLC

​

Texas

Benchmark Distribution Services, LLC

​

Texas

Rockwater Energy Solutions Water Management, LLC

​

Delaware

Rockwater Northeast, LLC

​

Delaware

Rockwater West TX, LLC

​

Delaware

EnerMAX Services Holdings, LLC

​

Delaware

EnerMAX Services G.P. ULC

​

Alberta

EnerMAX Services Limited Partnership

​

Alberta

EnerMAX Services (U.S.) Inc.

​

Delaware

Rockwater Energy Solutions North Dakota, Inc.

​

Delaware

Rockwater Production Testing Ltd.

​

Alberta

Rockwater Energy Solutions Administrative Services, LLC

​

Delaware

Crescent Companies, LLC

​

Delaware

​

​

​