Finished The New Create an Oasis with Greywater: Choosing, Building and Using Greywater Systems by Art Ludwig (4/5). As is obvious from the title, this is a somewhat technical book that is of interest mainly to people who are want to set up residential greywater systems. I am going to do a short series on the house blog about residential greywater (really!), so for now I'll just say that this book is full of solid information. A must read for anyone who wants to take advantage of the large amount of fairly easy to process greywater produced in their home.