Classic book on Greywater/Blackwater systems

The New Create an Oasis with Greywater: Choosing, Building and Using Greywater Systems

Create an Oasis describes how to quickly and easily choose, build, and use a simple greywater system. Some can be completed in an afternoon for under $30.
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.