- Environmental Health 5
- Hydrology/Water Resources 4
- Public Health 4
- Geochemistry 3
- Geology 3
- Occupational Medicine/Industrial Medicine 3
- Terrestrial Pollution 3
- Biogeosciences 2
- Environmental Science and Engineering 2
- Hydrogeology 2
- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Soil Science & Conservation 2
- Water Quality/Water Pollution 2
- Climate Change 1
- Ecotoxicology 1
- Environmental Chemistry 1
- Geoecology/Natural Processes 1
- Geoengineering, Foundations, Hydraulics 1
- Geophysics/Geodesy 1