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America's urban landscape is affecting our cities' water supply and water quality. Runoff from urban areas is a leading cause of water pollution in the United States, and in many areas people are using water faster than it can be replenished. More than 100 million acres of land have been developed in the United States, and with development and sprawl increasing faster than population growth, the risks to water supply and quality are growing. Low impact development, or LID, is a simple and cost-effective green development strategy that can help cities, states, and even individuals meet the water supply challenge, clean up our existing water resources, and, in many places in the West, curb global warming pollution by reducing the amount of electricity used to supply water.

last revised 8/11/2009

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