Tex. Spec. Dist. Code § 11007.207
If district bonds payable wholly from revenue are issued, the board shall set and from time to time revise the rates, fees, and charges assessed for water sold and waste collection and treatment services provided by the district. The rates, fees, and charges must be sufficient to:
Added by Acts 2015, 84th Leg., R.S., Ch. 855 (S.B. 1162), Sec. 1.07, eff. April 1, 2017.