<P> Open defecation is widespread even in urban areas of India . </P> <P> The Ganges River has been considered one of the dirtiest rivers in the world . The extreme pollution of the Ganges affects 600 million people who live close to the river . The river waters start getting polluted right at the source . The commercial exploitation of the river has risen in proportion to the rise of population . Gangotri and Uttarkashi are good examples too . Gangotri had only a few huts of Sadhus until the 1970s and the population of Uttrakashi has swelled in recent years . </P>

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