By Sim Van Der Ryn and Wendell Berry (Chelsea Green Publishing, 2000). A favorite of the back-to-the-land movement, this book provides "an informative and irreverent look at how people have dealt with human wastes over the centuries". Practical advice on designs to reduce water consumption and avoid expensive treatment systems, as well as homeowner plans for dry toilets, compost privies, and greywater systems. Looks at the history and philosophy of turning organic wastes into a rich humus.