Chapter 11, Problem 10CR

To determine

The methods to limit water pollution from nonpoint sources and point sources. The experience of U.S in reducing point-source water pollution and the ways to improve the efforts. The function of primary and secondary sewage treatment in treating wastewater. The methods to improve conventional sewage treatment. Waterless composting toilet system and the method used by John Todd to treat sewage. The role of wetlands in treating sewage. The methods to limit water pollution and the efforts required by individual to reduce the pollution. The chapter’s three big ideas, and the role of scientific principles of sustainability in guiding humans to use water sustainably and limit water pollution.