When we think of coastal pollution, we tend to picture dirty water and garbage drifting down river into the sea. But deep underground, our filth reaches the beach by a more secretive route: groundwater channels. A first-of-its-kind mapping analysis has now revealed that a fifth of US coastlines are susceptible to pollution from below the surface. And the problem goes both ways.
Source: Gizmodo – The Sneaky Reason US Coastlines Are Becoming More Polluted