Includes dirty water, organic liquids, and rainwater. Can be classified as point-source (manufactured) or non-point source (natural)
Hazardous waste comes from various industries and households. Contains chemicals, heavy metals, radiation, pathogens, and other materials. Some toxins persist in environment for years
E-waste includes electronics with plugs, cords and components. UK is one of world's largest producers of household e-waste. Common sources include TVs, computers, phones and household appliances