Article 11-4 USE OF PUBLIC SEWERS This article is included in your selections. Sections: 11-4-1 Prohibited Substances 11-4-2 Interceptors Required 11-4-3 Authority of Sanitation Department 11-4-4 Preliminary Treatment 11-4-5 Manholes 11-4-6 Tests and Analyses 11-4-7 Special Agreements with Industrial Concerns 11-4-8 Industrial Cost Recovery (ICR) System