ABSTRACT
Both individuals and industry produce liquid and solid wastes. The liquid portion, wastewater, is essentially water supply after it has been fouled by use. The ultimate goal in wastewater management is the protection of the environment commensurate with economic, social, political, and health concerns. Disease-producing organisms, especially those causing diarrhea, may be present in sewage. Sewage treatment which reduces the pollution and kills intestinal organisms assists in the production of a safe drinking water at a lower cost, prevents contamination of shellfish, and permits bathing, water sports, and recreation. Effects of pollution can be manifested by many characteristics and variations in degree when pollution enters the aquatic environment. The effects of organic wastes on the receiving stream often become confused with a specific stream because additional sources of pollution may enter the environment before the receiving water has been able to assimilate the entire effects of an initial source.
