The Charles River—the 80-mile river that hugs the north side of Boston just before draining into the Atlantic Ocean—has a problem: it is not always swimmable. Irrespective of endeavours for many years to cleanse the river, the Environmental Security Agency continue to faces barriers to make it clear enough to swim yr-spherical. Which is not to say the EPA hasn’t designed excellent development historically, the river was on a regular basis contaminated with sewage. “When there ended up huge rain gatherings, it would incorporate into the sewer technique and blackwater would circulation out [into the river],” claims Kate Kennen, associate instructing professor of landscape architecture at Northeastern. “It was really…