EESA10H3 Lecture Notes - Lecture 3: Coliform Bacteria, Water Scarcity, Hard Water
19 Jun 2013
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Document Summary
Some parts of usa don"t have enough water. Withdrawal: total amt of water removed from water source. Can be returned to original source for reuse. Precipitation in short period of time (but large amts of precipitation) Withdrawal - lakes and rivers can shrink as a result. Hydrological poverty: countries fighting over water sources. Water & your health: swimming, drinking water. City is responsible for taking water samples. Soft water - contains less ; uses more lead. Confined aquifer - water squeezed btwn layers under pressure. Better in terms of pollution b/c more difficult to contaminate. Quality: check slide image of sources of water contamination. Fecal coliform test (test for e. coli) Knew of high levels of e. coli, but failed to report to public: radionuclides. Radium, those broken down and taken by water. Main source is air not water: inorganic contaminants: arsenic. Medium sized wells are least contaminated; whereas deep and shallow ones are more contaminated.
