EESA10H3 Chapter Notes - Chapter 3: Methyl Tert-Butyl Ether, Cyanosis, Hemoglobin

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Our water supply faces old threats from human and industrial waste and new threats from demand overload and climate change. To fulfill human needs of water, we need to answer how clean and how much (quantity and quality) Diarrheal disease usually caused due to drinking contaminated water. 40% of the world population lack access to improve sanitary infrastructure. Updating the means of disposal of human waste improves human health more than providing clean water supplies. Drinking water is obtained from surface water such as streams, rivers, lakes. Other sources include collecting rain water and desalinating sea water. Surface water is more prone to contamination by microbial pathogens and chemicals since it receives industrial and municipal wastewater and runoff from the land. Groundwater is usually less contaminated than surface water because the soil acts as a filter. Exceptions occur when there is a direct path between surface to the groundwater, like under a landfill.

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