EESA10H3 Lecture Notes - Lecture 3: Water Scarcity, Environment And Climate Change Canada, Aquifer
1 Feb 2018
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Ees10h3 lecture 3: waterborne hazards and human health. Liquid natural capital: the earth is a water plant, water (cid:272)o(cid:448)ers 71% of the earth"s surfa(cid:272)e, mostly salt water, no species can live without water, s(cid:272)ulpting the earth"s surfa(cid:272)e, moderating climate, removing and diluting wastes and pollutants (sediments). World problems: quantity of water, quality of water. There is a lot of water in the planet earth but very little is readily available. Very unevenly: the two types of water deficiency are water stress and water scarcity, water stress < 1700 cubic meters/year/person (light orange, water scarcity < 1000 cubic meters/year/person (red) 85% of water use for irrigation is consumed and not returned to its water basin. Average water use in canadian homes (environment canada): Hydrological poverty: one out of 6 people do not have regular access to clean water, diarrheal deaths kill over 2 million children annually. Water and your health: drinking water (used for showering, cleaning, etc. (cid:895, swimming water.
