Tex. Utilities Code § 55.002: COMMISSION AUTHORITY CONCERNING STANDARDS.

The commission, on its own motion or on complaint and after reasonable notice and hearing, may:

(1) adopt just and reasonable standards, classifications, rules, or practices a public utility must follow in furnishing a service;

(2) adopt adequate and reasonable standards for measuring a condition, including quantity and quality, relating to the furnishing of a service;

(3) adopt reasonable rules for examining, testing, and measuring a service; and

(4) adopt or approve reasonable rules, specifications, and standards to ensure the accuracy of equipment, including meters and instruments, used to measure a service.

Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.