Subtitle 13Sewer Service Charges § 13-1. Charges imposed. § 13-2. Calculation – In general. § 13-3. Calculation – Non-City water sources. § 13-4. Exceptions. § 13-5. Storm drain discharge permits. § 13-6. Unusual circumstances. § 13-7. Administrative review. § 13-8. Meters. § 13-9. Collections. § 13-10. Charges to be liens. § 13-11. Regulations. § 13-12. Penalties.