EESA10H3 Lecture Notes - Lecture 3: Septic Tank, Lake Ontario, Aquifer
8 Feb 2013
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Lecture 3 (january 25, 2012): waterborne hazards and human. Withdrawal- total amount of water removed from a river, lake or aquifer for any purpose. Some may be returned to the source for reuse. Use about 54 % of the world"s reliable runoff of surface water and could be using 70-90% by 2025. Some areas have lots of water but the largest rivers are far from agricultural and population centers since water is not near agricultural places, the water must be transported which costs money. Lots of precipitation arrives during short period but cannot be collected and stored. In canada we mostly use water for power plant cooling. Agriculture is most responsible for water use. Average water use in canadian homes (environment canada, 2005) Toilet flushing is second most use of water. One out of six people do not have regular access to clean water. Diarrheal deaths kill over 2 million children annually. Hydrological poverty not enough water is available.
