Category | Types of contaminants | Source of contamination |
Residential | Air pollution | Septic tank |
Household waste water | Sewer network | |
Household waste | Fuel oil | |
Furniture stripping/refinishing | Paints | |
Municipal | Municipal sludge spreading in land | Air pollution |
Salt for street de-icing | Streets and packing lots | |
Municipal incinerators | Municipal landfills | |
Sewer lines | Road maintenance depot | |
Wastewater treatment plants effluents |
| |
Commercial | Airports | Metal plating |
Construction areas | Medical institutions | |
Car washes | Research laboratories | |
Cemeteries | Rail road tracks | |
Dry cleaners | Laundromats | |
Gas stations | Scap/junk yards | |
Golf courses | Recycling facilities | |
Industrial | Chemical industry/storage | Metal fabricators |
Electronics manufacture | Petroleum production | |
Mining and mine drainage | Pipelines | |
Metal working shops | Storage tanks | |
Toxic/hazardous spills | Wells | |
Agriculture | Animal feeds | Fertilizer storage/use |
Irrigation sites | Manure spreading areas | |
Sludge reuse | Chemical spills | |
Live stocks waste | Pesticides | |
Tanks | Wells |