Best Use of Pollution Ever

Our state environmental protection agency profiled a success story in their most recent newsletter - the clean up of the once polluted Nashua River which used to run various colors from textile and paper mill dyes. But look at the before and after photos. Isn't it obvious how they solved the river's pollution problem?  They sprayed the river onto the porous brick buildings.  Ingenious!  This is the kind of solution you'd see played out in a comic book.

Before

After