Article courtesy of Samantha Larson | October 11th, 2016 | Crosscut.com | Shared as educational material.
Seattle is trying out a new old solution in order to combat the rainfall runoff pollution. They intend to replace certain areas around the city, mainly near the pavement, with things like grass and soil. Unlike pavement, soil and grass can absorb rainwater and hence filter it. Moreover, the latter inhibit the possibility of run-off. Because water cannot be absorbed into the pavement, most of the times, water runs down to the nearest large water source with the pollution it brings along. Read more about the solution here.