Inorganic and Oil
Poisonous inorganic chemical, specifically those of the heavy metal group, such as lead, mercury, and chromium, also usually originate from industrial activities and are considered hazardous waste.
Oil is washed into surface water in ruoff from road and parking lot, and groundwater can be polluted from leaking underground tanks, accidental oil spills from large transport tankers at a sea occasional occur, causing significant environmental damage. Blow out accident at offshore oil wells can release many thousand of tonnes of oil in a short period of time. Oil spills at sea may eventually move towards shore, affecting aquatic life and damaging recreational areas.