Glossary

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Pandemic	United States Environmental Protection Agency, Terms of Environment
Pandemic Disease	United Nations, Glossary of Environment Statistics
Paraquat	United States Environmental Protection Agency, Terms of Environment
Parasite	United Nations, Glossary of Environment Statistics
Particulates	United States Environmental Protection Agency, Office of Compliance and Assurance
Particulates	United States Environmental Protection Agency, Terms of Environment
Particulates	United Nations, Glossary of Environment Statistics
Partition Coefficient	United States Environmental Protection Agency, Terms of Environment
Parts per billion (ppb)	United States Environmental Protection Agency, Office of Compliance and Assurance
Parts Per Billion (ppb)/Parts Per Million (ppm)	United States Environmental Protection Agency, Terms of Environment
Parts per million (ppm)	United States Environmental Protection Agency, Office of Compliance and Assurance
Parts per trillion (ppt)	United States Environmental Protection Agency, Office of Compliance and Assurance
Passive Smoking/Secondhand Smoke	United States Environmental Protection Agency, Terms of Environment
Pasteurization	United Nations, Glossary of Environment Statistics
Pathogen	United States Environmental Protection Agency, Office of Compliance and Assurance
Pathogen	United Nations, Glossary of Environment Statistics
Pathogens	United States Environmental Protection Agency, Terms of Environment
Pathway	United States Environmental Protection Agency, Terms of Environment
Peat Soil	United Nations, Glossary of Environment Statistics
Percolation	United States Environmental Protection Agency, Terms of Environment
Percolation	United Nations, Glossary of Environment Statistics
Performance Standards	United States Environmental Protection Agency, Terms of Environment
Periphyton	United States Environmental Protection Agency, Terms of Environment
Permanganate of Potash	United Nations, Glossary of Environment Statistics
Permeability	United States Environmental Protection Agency, Terms of Environment
Permeability	United Nations, Glossary of Environment Statistics
Permissible Exposure Limit (PEL)	United States Environmental Protection Agency, Office of Compliance and Assurance
Permit	United States Environmental Protection Agency, Terms of Environment
Peroxyacetyl Nitrate (PAN)	United Nations, Glossary of Environment Statistics
Persistent Pesticides	United States Environmental Protection Agency, Terms of Environment
Pest	United States Environmental Protection Agency, Terms of Environment
Pest	United Nations, Glossary of Environment Statistics
Pesticide	United States Environmental Protection Agency, Office of Compliance and Assurance
Pesticide	United States Environmental Protection Agency, Terms of Environment
Pesticide	United Nations, Glossary of Environment Statistics
Pesticide Tolerance	United States Environmental Protection Agency, Terms of Environment
PETE (Polyethylene Terepthalate)	United States Environmental Protection Agency, Terms of Environment
Petroleum	United States Environmental Protection Agency, Terms of Environment
Petroleum Derivatives	United States Environmental Protection Agency, Terms of Environment
pH	United States Environmental Protection Agency, Office of Compliance and Assurance
pH	United States Environmental Protection Agency, Terms of Environment
pH Value	United Nations, Glossary of Environment Statistics
Pharmacokinetics	United States Environmental Protection Agency, Terms of Environment
Phenols	United States Environmental Protection Agency, Terms of Environment
Phenols	United Nations, Glossary of Environment Statistics
Phosphates	United States Environmental Protection Agency, Terms of Environment
Phosphogypsum Piles (Stacks)	United States Environmental Protection Agency, Terms of Environment
Phosphorus	United States Environmental Protection Agency, Terms of Environment
Phosphorus	United Nations, Glossary of Environment Statistics
Photochemical Air Pollution	United Nations, Glossary of Environment Statistics
Photochemical Oxidants	United States Environmental Protection Agency, Terms of Environment
Photochemical Smog	United States Environmental Protection Agency, Terms of Environment
Photosynthesis	United States Environmental Protection Agency, Terms of Environment
Photosynthesis	United Nations, Glossary of Environment Statistics
Physical and Chemical Treatment	United States Environmental Protection Agency, Terms of Environment
Physical Pollution	United Nations, Glossary of Environment Statistics
Phytoplankton	United States Environmental Protection Agency, Terms of Environment
Phytotoxic	United States Environmental Protection Agency, Terms of Environment
Phytotoxic	United Nations, Glossary of Environment Statistics
Piezometer	United States Environmental Protection Agency, Terms of Environment
Pigouvian Tax	United Nations, Glossary of Environment Statistics
Plankton	United States Environmental Protection Agency, Terms of Environment
Plankton	United Nations, Glossary of Environment Statistics
Plasmid	United States Environmental Protection Agency, Terms of Environment
Plastics	United States Environmental Protection Agency, Terms of Environment
Plastics	United Nations, Glossary of Environment Statistics
Plume	United States Environmental Protection Agency, Office of Compliance and Assurance
Plume	United States Environmental Protection Agency, Terms of Environment
Plumes	United Nations, Glossary of Environment Statistics
Plutonium	United States Environmental Protection Agency, Terms of Environment
Pneumoconiosis	United States Environmental Protection Agency, Terms of Environment
Point Source	United States Environmental Protection Agency, Office of Compliance and Assurance
Point Source	United States Environmental Protection Agency, Terms of Environment
Point Source of Pollution	United Nations, Glossary of Environment Statistics
Poised Stream	United Nations, Glossary of Environment Statistics
Poison	United Nations, Glossary of Environment Statistics
Pollen	United States Environmental Protection Agency, Terms of Environment
Pollutant	United States Environmental Protection Agency, Terms of Environment
Pollutant	United Nations, Glossary of Environment Statistics
Pollutant Pathways	United States Environmental Protection Agency, Terms of Environment
Polluter-pays Principle	United Nations, Glossary of Environment Statistics
Pollution	United States Environmental Protection Agency, Office of Compliance and Assurance
Pollution	United States Environmental Protection Agency, Terms of Environment
Pollution	United Nations, Glossary of Environment Statistics
Pollution Abatement	United Nations, Glossary of Environment Statistics
Pollution Abatement Costs or Expenditures	United Nations, Glossary of Environment Statistics
Pollution of Poverty	United Nations, Glossary of Environment Statistics
Pollution Prevention	United States Environmental Protection Agency, Office of Compliance and Assurance
Pollution Prevention	United States Environmental Protection Agency, Terms of Environment
Polonium	United States Environmental Protection Agency, Terms of Environment
Polychlorinated Biphenyls (PCBs)	United States Environmental Protection Agency, Office of Compliance and Assurance
Polychlorinated Biphenyls (PCBs)	United Nations, Glossary of Environment Statistics
Polycyclic Aromatic Hydrocarbons (PAHs)	United Nations, Glossary of Environment Statistics
Polyelectrolytes	United States Environmental Protection Agency, Terms of Environment
Polymer	United States Environmental Protection Agency, Terms of Environment
Polysaprobe	United Nations, Glossary of Environment Statistics
Polyvinyl Chloride (PVC)	United States Environmental Protection Agency, Terms of Environment
Polyvinyl Chloride (PVC)	United Nations, Glossary of Environment Statistics
Population	United States Environmental Protection Agency, Terms of Environment
Population Density	United Nations, Glossary of Environment Statistics
Population Vulnerability Analysis (PVA)	United Nations, Glossary of Environment Statistics
Porosity	United States Environmental Protection Agency, Terms of Environment
Potable Water	United States Environmental Protection Agency, Office of Compliance and Assurance
Potable Water	United States Environmental Protection Agency, Terms of Environment
Potable Water	United Nations, Glossary of Environment Statistics
Potentiation	United States Environmental Protection Agency, Terms of Environment
ppm/ppb/ppt	United Nations, Glossary of Environment Statistics
Precautionary Principle	United States Environmental Protection Agency, Terms of Environment
Prechlorination	United States Environmental Protection Agency, Terms of Environment
Precipitate	United States Environmental Protection Agency, Terms of Environment
Precipitation	United States Environmental Protection Agency, Terms of Environment
Precipitation	United Nations, Glossary of Environment Statistics
Precursor	United States Environmental Protection Agency, Terms of Environment
Preliminary Treatment	United Nations, Glossary of Environment Statistics
Prescriptive	United States Environmental Protection Agency, Terms of Environment
Pressure-State-Response Framework	United Nations, Glossary of Environment Statistics
Pretreatment	United States Environmental Protection Agency, Terms of Environment
Prevalent Levels	United States Environmental Protection Agency, Terms of Environment
Primary Drinking Water Regulation	United States Environmental Protection Agency, Terms of Environment
Primary Standards	United States Environmental Protection Agency, Terms of Environment
Primary Treatment	United States Environmental Protection Agency, Office of Compliance and Assurance
Primary Waste Treatment	United States Environmental Protection Agency, Terms of Environment
Process Weight	United Nations, Glossary of Environment Statistics
Producers	United States Environmental Protection Agency, Terms of Environment
Product Flow Accounts	United Nations, Glossary of Environment Statistics
Propellant	United States Environmental Protection Agency, Terms of Environment
Protected Area	United Nations, Glossary of Environment Statistics
Protection Against Erosion	United Nations, Glossary of Environment Statistics
Protection Against Natural Hazards	United Nations, Glossary of Environment Statistics
Protection of Ambient Air	United Nations, Glossary of Environment Statistics
Protection of Ambient Water	United Nations, Glossary of Environment Statistics
Protection of Climate and the Ozone Layer	United Nations, Glossary of Environment Statistics
Protection of Soil and Groundwater	United Nations, Glossary of Environment Statistics
Protection of Species and Habitats	United Nations, Glossary of Environment Statistics
Proteins	United States Environmental Protection Agency, Terms of Environment
Protocol	United States Environmental Protection Agency, Terms of Environment
Protoplast	United States Environmental Protection Agency, Terms of Environment
Protozoa	United States Environmental Protection Agency, Terms of Environment
Public Health Approach	United States Environmental Protection Agency, Terms of Environment
Pumping Test	United States Environmental Protection Agency, Terms of Environment
Purging	United States Environmental Protection Agency, Terms of Environment
Putrefaction	United States Environmental Protection Agency, Terms of Environment
Putrescible Waste	United Nations, Glossary of Environment Statistics
Pyrolysis	United States Environmental Protection Agency, Terms of Environment
Pyrolysis	United Nations, Glossary of Environment Statistics