EX-21.1 3 a2234343zex-21_1.htm EX-21.1
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Exhibit 21.1

Subsidiaries of Select Energy Services, Inc.

Entity   State of Formation
SES Holdings, LLC   Delaware
Select Energy Services, LLC   Delaware
Peak Oilfield Services, LLC   Texas
Affirm Oilfield Services, LLC   Texas
Rockwater Energy Solutions, LLC   Delaware
Benchmark Energy Products, LLC   Texas
Reef Services, LLC   Delaware
Rockwater West TX, LLC   Delaware
Crescent Companies, LLC   Oklahoma


Subsidiaries of Select Energy Services, Inc.