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© 2011 Pearson Education, Inc. Objectives: Define the terms point-source pollution and non-point- source pollution. Assess problems of water quality and propose solutions to address water pollution. Explain how we treat drinking water and wastewater. TED - Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds. An amazing demo from TEDGlobal 2009.