Select Energy Services, Inc. is a holding company. The Company is provider of total water solutions to the United States unconventional oil and gas industry. The Company is engaged in sourcing and transfer of water prior to its use in drilling and completion activities associated with hydraulic fracturing or fracking, which collectively referrd to as pre-frac water services. The Company provides its services to integrated and exploration and production (E&P) companies. Its operating segments include water solutions, accommodation and rentals, and wellsite completion and constructive services. The Company’s services include water sourcing, water transfer, water treatment, fluid handling, disposal solutions, accommodations, rentals, and wellsite construction. The Company also provides complementary water-related services that support oil and gas well completion and production activities including containment, monitoring, treatment, flowback, hauling and disposal.