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Groundwater quality in the Upper Santa Ana Watershed study unit, California

http://pubs.usgs.gov/fs/2012/3037/

Recent study indicating nitrate and perchlorate are the primary inorganic constituents of interest here, coming from human activities such as agriculture.

by Kent, Robert H. and Belitz, Kenneth
U.S. Geological Survey Fact Sheet 2012-3037
Related topics:
Contamination and pollution, Groundwater quality, Nutrient content (water), Water chemistry, Aquifers
States or counties
Riverside, San Bernardino

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