- High Plains Aquifer System
A study specifically of the water quality in the High Plains Aquifer system. http://webserver.cr.usgs.gov/nawqa/hpgw/ (Added: Fri Feb 14 2003)
- Pesticides in Ground Water
Another is a collection of data on pesticides in ground water. http://water.wr.usgs.gov/pnsp (Added: Fri Feb 14 2003)
- United States Geological Survey Toxic Substances Hydrology Program
The Toxic Substances Hydrology Program provides objective scientific information to improve characterization and management of contaminated sites, to protect human and environmental health, and to reduce potential future contamination problems. http://toxics.usgs.gov/ (Added: Fri Feb 14 2003)
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