Tex. Water Aux. Laws § 7866

The commissioners court must, on receipt of such resolution, order an election on the day specified therein. Notice of such election shall be given, returns made, result declared, orders entered, tax levied, certified, assessed and collected, and all other matters applicable shall be performed in the same manner as herein provided in case of elections for original bonds. All provisions as to the issuance, approval, validation, registration, recordation and sale of original bonds shall be applicable to such additional bonds.