Get the Book and Spreadsheet tool at once!

The book is offered in either a softcover, audio (.mp3), or digital (.pdf, .epub) format.

The Essential Rainwater Harvesting Tool is a pre-built spreadsheet tool for performing rainwater system feasibility analyses. It contains beautifully formatted tables, the formulas and logic presented in the Essential Rainwater Harvesting book, plus a substantial number of more advanced features. It is pre-programmed and ready-to-go.