Grey Water (Greywater, Gray Water, Graywater)
- Grey Water Central: http://oasisdesign.net/greywater/greywater.htm
Groundwater Organizations
- American Ground Water Trust: http://www.agwt.org/index.htm
- Groundwater Foundation: http://www.groundwater.org
- Ground Water On-Line: http://www.wellowner.org/
Groundwater Recharge
- USGS Water Recharge Demonstration Project: http://ks.water.usgs.gov/Kansas/studies/equus