| Facultative Bacteria |
United States Environmental Protection Agency, Terms of Environment |
| Faecal Coliform Bacteria |
United Nations, Glossary of Environment Statistics |
| Fauna |
United Nations, Glossary of Environment Statistics |
| Fecal Coliform Bacteria |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Fecal Coliform Bacteria |
United States Environmental Protection Agency, Terms of Environment |
| Feedlot |
United States Environmental Protection Agency, Terms of Environment |
| Feedlot |
United Nations, Glossary of Environment Statistics |
| Feedstock |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Fen |
United States Environmental Protection Agency, Terms of Environment |
| Fen |
United Nations, Glossary of Environment Statistics |
| Ferrous Metals |
United States Environmental Protection Agency, Terms of Environment |
| Field Capacity |
United Nations, Glossary of Environment Statistics |
| Filtration |
United States Environmental Protection Agency, Terms of Environment |
| Filtration |
United Nations, Glossary of Environment Statistics |
| Finished Water |
United States Environmental Protection Agency, Terms of Environment |
| Flammable |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Flammable |
United States Environmental Protection Agency, Terms of Environment |
| Flare |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Flare |
United States Environmental Protection Agency, Terms of Environment |
| Flaring |
United Nations, Glossary of Environment Statistics |
| Flash Point |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Flash Point |
United States Environmental Protection Agency, Terms of Environment |
| Flocculation |
United States Environmental Protection Agency, Terms of Environment |
| Flocculation |
United Nations, Glossary of Environment Statistics |
| Floodplain |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Floodplain |
United States Environmental Protection Agency, Terms of Environment |
| Flora |
United Nations, Glossary of Environment Statistics |
| Flow Rate |
United States Environmental Protection Agency, Terms of Environment |
| Flowmeter |
United States Environmental Protection Agency, Terms of Environment |
| Flue |
United Nations, Glossary of Environment Statistics |
| Flue Gas |
United States Environmental Protection Agency, Terms of Environment |
| Flue Gas |
United Nations, Glossary of Environment Statistics |
| Flue Gas Desulfurization |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Flue Gas Desulfurization |
United States Environmental Protection Agency, Terms of Environment |
| Flue Gas Desulphurization (FGD) |
United Nations, Glossary of Environment Statistics |
| Flume |
United States Environmental Protection Agency, Terms of Environment |
| Fluoridation |
United States Environmental Protection Agency, Terms of Environment |
| Fluorides |
United States Environmental Protection Agency, Terms of Environment |
| Fluorides |
United Nations, Glossary of Environment Statistics |
| Fluorocarbon |
United Nations, Glossary of Environment Statistics |
| Fluorocarbons (FCs) |
United States Environmental Protection Agency, Terms of Environment |
| Fluorosis |
United Nations, Glossary of Environment Statistics |
| Fly Ash |
United States Environmental Protection Agency, Terms of Environment |
| Fly Ash |
United Nations, Glossary of Environment Statistics |
| Fogging |
United States Environmental Protection Agency, Terms of Environment |
| Fogging |
United Nations, Glossary of Environment Statistics |
| Food Chain |
United States Environmental Protection Agency, Terms of Environment |
| Food Chain |
United Nations, Glossary of Environment Statistics |
| Food Web |
United States Environmental Protection Agency, Terms of Environment |
| Food Web |
United Nations, Glossary of Environment Statistics |
| Forest Functions |
United Nations, Glossary of Environment Statistics |
| Formaldehyde |
United States Environmental Protection Agency, Terms of Environment |
| Fossil Fuel |
United States Environmental Protection Agency, Terms of Environment |
| Fossil Fuels |
United Nations, Glossary of Environment Statistics |
| Fracture |
United States Environmental Protection Agency, Terms of Environment |
| Framework for Indicators of Sustainable Development (FISD) |
United Nations, Glossary of Environment Statistics |
| Framework for the Development of Environment Statistics (FDES) |
United Nations, Glossary of Environment Statistics |
| Fresh Water |
United States Environmental Protection Agency, Terms of Environment |
| Freshwater |
United Nations, Glossary of Environment Statistics |
| Friable Asbestos |
United States Environmental Protection Agency, Terms of Environment |
| Fuel Efficiency |
United States Environmental Protection Agency, Terms of Environment |
| Fuelwood |
United Nations, Glossary of Environment Statistics |
| Fugitive Emissions |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Fugitive Emissions |
United States Environmental Protection Agency, Terms of Environment |
| Fugitive Emissions |
United Nations, Glossary of Environment Statistics |
| Fume |
United States Environmental Protection Agency, Terms of Environment |
| Fume |
United Nations, Glossary of Environment Statistics |
| Fumigant |
United States Environmental Protection Agency, Terms of Environment |
| Fumigant |
United Nations, Glossary of Environment Statistics |
| Fungi |
United Nations, Glossary of Environment Statistics |
| Fungicide |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Fungicide |
United States Environmental Protection Agency, Terms of Environment |
| Fungicide |
United Nations, Glossary of Environment Statistics |
| Fungus (Fungi) |
United States Environmental Protection Agency, Terms of Environment |
