By A Mystery Man Writer
Grey water, also spelled as gray water, is water that already has been used domestically, commercially and industrially.
Water footprint - Wikipedia
Gray water's time in the sun
Home Water Topics - Water Education Foundation
Nick Gray - Water Education Foundation
Bainbridge Chamber Education Foundation - Bainbridge Island Chamber of Commerce
Decision making for implementing non-traditional water sources: a review of challenges and potential solutions
IHE Delft Institute for Water Education
NetZeroCities
Topic: Grey water - Water Education Foundation
The Grey Water Project
Environmental performance of building integrated grey water reuse systems based on Life-Cycle Assessment: A systematic and bibliographic analysis - ScienceDirect
Grey Water - Water Education Foundation
Keep your lawn and garden lush without wasting resources by capturing and recycling the greywater that drains from your sink, shower, and washing
Greywater Green Landscape
Water scarcity Description, Mechanisms, Effects, & Solutions