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Subject
- Water23
- Groundwater19
- Water quality11
- Pesticides9
- Volatile organic compounds8
- Drinking water7
- Organochlorine compounds7
- Water-supply5
- Contaminated sediments4
- Nutrient pollution of water4
- Bacterial pollution of water3
- Butyl methyl ether3
- Nitrates3
- Viral pollution of water3
- Agricultural pollution2
- Aquifers2
- Bridges2
- Groundwater flow2
- Herbicides2
- Land use2