This book is for the 60 million people in the U.S. whose homes have septic systems. It describes a basic gravity-flow septic system including the tank and the drainfield. It will tell you a bit about soil and the ability of microorganisms to purify water-borne pathogens. You will learn what you can do daily (dishes, toilet, washing machine) to promote healthy functioning of a septic system. We will describe common-sense maintenance, periodic tank inspections, and tank pumping when necessary. There is a chapter on what to do if things go wrong, and information on simple graywater systems and on composting toilets. Alternatives to the typical gravity-fed septic system are described, including mounds, sand-filters, pressure-dosed drainfields, and wetlands.
