(a) Notwithstanding any other provision of this section, municipalities shall continue to regulate each kind of local utility service inside their boundaries until the utility commission has assumed jurisdiction over the respective utility pursuant to this chapter.
(b) If a municipality does not surrender its jurisdiction, local utility service within the boundaries of the municipality shall be exempt from regulation by the utility commission under this chapter to the extent that this chapter applies to local service, and the municipality shall have, regarding service within its boundaries, the right to exercise the same regulatory powers under the same standards and rules as the utility commission or other standards and rules not inconsistent with them. The utility commission’s rules relating to service and response to requests for service for utilities operating within a municipality’s corporate limits apply unless the municipality adopts its own rules.

(c) Notwithstanding any election, the utility commission may consider water and sewer utilities’ revenues and return on investment in exempt areas in fixing rates and charges in nonexempt areas and may also exercise the powers conferred necessary to give effect to orders under this chapter for the benefit of nonexempt areas. Likewise, in fixing rates and charges in the exempt area, the governing body may consider water and sewer utilities’ revenues and return on investment in nonexempt areas.
(d) Utilities serving exempt areas are subject to the reporting requirements of this chapter. Those reports and tariffs shall be filed with the governing body of the municipality as well as with the utility commission.
(e) This section does not limit the duty and power of the utility commission to regulate service and rates of municipally regulated water and sewer utilities for service provided to other areas in Texas.