Rather than polluting watercourses with sewage, many ways exist to recycle it. Sewage Solutions explains such natural methods of treatment as reed beds, cess pits, water stabilization ponds, septic tanks and compost toilets, and also describes how to collect and recycle waste water. Whether connected to municipal drain systems or not, this is the guide for all interested in the complete process of sewage recycling. The authors Nick Grant, Mark Moodie and Chris Weedon are all consultants on a wide range of water and wastewater issues.
This book is an excellent argument for composting toilets. It explains how soil is formed, and shows how inefficient and polluting it is to mix waste with water. It also contains some helpful charts that can help you decide what kind of waste treatment is best given your site. The book is from the U.K. so it feels very British, but the ideas are applicable worldwide.