Septic regulation changes in 2005 make discharging greywater a violation in most cases.
High-Efficiency Reverse Osmosis Treats Gray Water for Power
Simple Greywater Systems For Your Home
Greywater in New Construction - Greywater Action
Wash Water (Gray Water)
Grey Water recycling Treatment
Greywater in New Construction - Greywater Action
Greywater - Wikipedia
Laundry-to-Garden: How to Irrigate with Graywater - Modern Farmer
How can homeowners recycle grey water? – Soils Matter, Get the Scoop!
Gray Water Reuse Oklahoma State University
Black and grey water management
An Unnatural Fear of Gray Water Systems (grey water forum at permies)
Does washing machine water go into a septic tank? - Quora
Branched-Drain Greywater Distribution Plumbing - Rainwater