Grey water is typically waste water from the bathroom, kitchen and laundry.
We looked into using grey water to supplement watering the garden. However, grey water is not suitable for use on vegetable beds, fruit trees or herbs. Grevillas and a large majority of other Australian natives are not tolerant of the levels of phosphorous in grey water.
At the moment, we currently have a grey water hose that attaches the end of the washing machine, and we direct this waste water on to our grassy areas. It’s been effective at keeping our lawn alive in between rainy days, and our grass seems to stay greener longer then our neighbours’.