It also provides complete instructions for more complex installations, how to deal with freezing, flooding, drought, failing septics, low perk soil, non-industrialized world conditions, coordinating a team of professionals to get optimum results on high-end projects, and "radical plumbing" that uses 90% less resources.Create an Oasis with Greywater Comprehensive plans for many types of oasis. Well laid out, useful diagrams & photo examples.