If properly stored and separated from potable water, graywater collected from sinks, showers, and clothes washers can be used to irrigate landscaping.
Graywater Collection and Use
Experimental setup used for grey water treatment by SMBR.
Greywater Reuse - Greywater Action
MEP Energy Savings - Professional Engineer Credits - PDH for Engineers
Simple Gray Water Systems: Type 1
Appendix C Gray Water Recycling Systems: Gray Water Recycling Systems, NYS Plumbing Code 2010
Greywater recycling
How to use greywater in the garden, DIY Garden Projects
Appalachian Community Technical Assistance and Training at West Virginia University
When gray equals green: Recycling water makes growing sense., 2016-11-16
How Can You Reuse Your Gray Water? - Genesis Water Tech