The paper reports on a study of five pupils' (13-14 years old) learning about freshwater pollution and related theoretical concepts such as drainage basin and water pollution. Much of the instruction is devoted to fieldwork conducted at a polluted lake and other practical activities designed to promote the pupils' understanding of the central…

Discusses the chlorination of water supplies. Includes a description of the chemical species present due to chlorination, and the dangers of and alternatives to the chlorination of water systems. (MLH)

Reorganization of authorities resulting in sound direction, greater flexibility, and more attention to cost effectiveness has helped the British achieve a high quality of water service. The history and development of British water management are reviewed and more cooperation between federal and state agencies is encouraged. (BT)

Participants in the D-19 symposium on aquatic sampling and measurement for water pollution assessment were informed that determining the extent of waste water stream pollution is not a cut and dry procedure. Topics discussed include field sampling, representative sampling from storm sewers, suggested sampler features and application of improved…

Discusses environmental pollution problems caused by direct discharge of submarine seeps of marine oil. (PEB)

The data within this publication provide guidelines for planners, engineers and decision-makers at all governmental levels to evaluate cost-effectiveness of alternative wastewater treatment proposals. The processes described include conventional and advanced treatment units as well as most sludge handling and processing units. Flow sheets, cost…

This pamphlet utilizes illustrations and captions to indicate the demands currently made on our water resources and the problems associated with that demand. Current and future solutions are described with suggestions for personal conservation efforts to help provide enough clean water for everyone in the future. (CS)

Report of a Workshop (Subject-Field Meeting) conducted at the Annual Conference of the National Association of Independent Schools, February 1969.

This report was prepared for the President of the United States by the Council of Environmental Quality. Location, quantities, composition, trends, pollution, and international aspects of ocean dumping are discussed. Also included are alternatives to dumping and legislative control. Recommendations are made dealing with policies, regulations, and…

Described is a modification to the standard procedure for terminating a gravimetric sulfate determination that should be useful when analyzing sulfate levels in drinking water. (CS)

This report outlines the state of the art with respect to nonmechanical and mechanical methods of dewatering water treatment plant sludge, ultimate solids disposal, and research and development needs. (CS)

Presented is information necessary to an electric utility company and electrical equipment manufacturer to ensure the proper combination of motor and starting equipment in a water-utility facility. (CS)

Descriptions of and suggestions for waste water pump installation and maintenance are given. (MR)