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Graywater Guide

Thinking about using graywater for your garden?

This free guide is a must read if you want to make the most of your graywater.

Topics include:
About the Author
  • How graywater moves through soil
  • What plants really want
  • Graywater in the garden
  • How to irrigate with buckets, hoses, branched drains, laundry to landscape, graywater dripperline, gravity and pumped systems
  • Calculating the correct irrigation area for your graywater
  • Plumbing for Graywater
  • Graywater code analysis
  • Additional resources

With over 7 years experience in Australia and the U.S., Paul James is recognised as leader in the field, invited as expert panellist for Industry Symposiums in Australia and the U.S.

His graywater dripperline specifications, and ETo / Graywater dripperline efficiency calculations appear in several U.S. state code definitions.

Passionate about water, and recognising the rapidly increasing value of water, Paul is focussed on educating the general public about using water to its maximum benefit.


If you do not see an embedded document above, you can access the guide directly from Scribd, by clicking here.


The following information was written before we released our guide. It is still valid, and contains useful information, however the guide is more detailed.

2 minute overview

A quick introduction to graywater, and what is possible.

About Graywater

Graywater vs Blackwater, Practical graywater reuse, Non treatment vs treatment.

Different ways to reuse Graywater

Buckets, hoses, drains, laundry to landscape, gravity dripperline, pressurized dripperlines.
An evaulation of the pro's and con's of each method.

Understanding the effects of Capillary Irrigation

The core principle of capillary irrigation and why this is critical for graywater.
(or what they should have taught you at school but didn't)

Understanding what Plants, Shrubs and Trees really want

The core principles of efficient irrigation and garden growth.
(or more that they should have taught you at school but didn't)

Graywater irrigation coverage calculator

How far graywater goes if irrigated properly.
(it's far more than you thought)

Graywater and Gardens

Do's and Don'ts, Shower water, Washing machine water, Water Softeners, growing Fruit and Vegetables with graywater.

Planning your irrigation network

How to install an irrigation network using graywater dripperline.

Plumbing Overview

General plumbing concepts for capturing graywater in the first place.


Current information based on our extensive experience, debunking popular misconceptions.