In many public water systems, pollution exceeds safe levels. One reason for this is that the wastes pumped underground for disposal or seeping surface water have contaminated much groundwater. Once the polluted water hits the water table it is hard to fix because it spreads quickly and for long distances. There are so many different kinds of water pollution it is amazing. Some include mercury, lead, cadmium, arsenic, aluminum and of course oil.
Oil enters the oceans primarily as a result of oil tanker accidents.
Such spills ruin beaches, and kill birds or marine life. This is just a scratch off the surface on diseases that can be caused by different kinds of water pollution. Contact instructor and include the URL of this page.