Chapter 13.08 SEWERS This chapter is included in your selections. Sections: 13.08.010 Definitions. 13.08.011 Wastewater Rates. 13.08.020 Service Charges. 13.08.030 Monthly Wastewater Charge--Determination of Flow. 13.08.040 Industry Standard Sewer Discharge Volume Credits. 13.08.050 Appeal of assigned use category strength or volume credit.