Soil scientists Amador and Loomis explain how wastewater is treated and cleaned as it passes through the soil. They write for practitioners, engineers, scientists, regulators, resource managers, planners, and others with a need to know about onsite wastewater treatment systems, that is, septic systems. They cover wastewater treatment technologies; characteristics of wastewater; the soil environment; water in the soil treatment area; transformations of carbon, nitrogen, and phosphorus; the removal and inactivation of pathogens; the fate of emerging pollutants; impact on the environment; and the future of soil-base wastewater treatment. Annotation 2019 Ringgold, Inc., Portland, OR (protoview.com)