This twentieth-anniversary edition of the world's best-selling greywater book features a dozen more pages, complete information on the "laundry to landscape" system, new color plates, extensive revisions to every page, and dozens of new photos and figures. Topics include complete instructions for simple to more complex installations, how to deal with freezing, flooding, drought, failing septic tanks, low perk soil, and conditions in non-industrialized regions; coordinating a team of professionals to get optimum results on high-end projects, and "radical plumbing" that uses 90% fewer resources.