Form: EFFECT

Notice of Effectiveness

October 14, 2021

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Notice of Effectiveness

Effectiveness Date: October 14, 2021 4:30 P.M.
Form: S-1
CIK: 0001693256
Company Name: Select Energy Services, Inc.
File Number: 333-260093