Porous pavement can really help reduce runoff in large cities. This pavement prevents oil and other contaminants from getting to the soil. It lets the water flow through it and is stored in a rocky area that filters the water before it reaches the soil. This can be a really good solution. It would be costly and does have some problems. In cold weather it does not really hold up very well. This would be a great application for parking lots and even highways. It can even prevent hydroplaning. This is really cool.
The use of trees is a great idea as well. Trees can be used to soak up a lot of rain water in areas that have trouble with flooding. Another great solution would be the addition of plants on rooftops. The plants will soak up the water and prevent it from running across a filthy building into our soil.
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