Recognizing pollution abatement as a growing problem which must be dealt with if our needs for an adequate supply of water of adequate quality for all segments of our economy are to be met in future years, the Secretary of the Department of Health, Education, and Welfare prepared a report for the committee covering the present and future extent of water pollution hazards brought about by industrial and municipal sewage and other waste materials disposed of in water. The report covers recent trends in the production and treatment of wastes, the relationship of sediment loads in our rivers to other pollution, and views as to requirements and recommendations for pollution control measures needed between now and 1980.