Experiments in various sewage treatment plants are discussed; evaluation of bacterial removal by chlorination of raw sewage, by post-chlorination of effluents, and by providing chlorine contact in settling tanks; it is concluded that chlorination of all sewage including that mixed with storm water is required for effective pathogen kill.

This report is a review of the literature dealing with the marine disposal of wastes.

Aspects of abatement of pollution due to overflows resulting from rainstorms in combined sewer systems of older cities; restriction of overflows by intercepting sewers; treatment of intercepted flow; elimination of combined sewage overflows by construction of new system of sanitary sewers for complete separation.