The Boston Globe on Instagram: "For the first time in a century, the waters of Boston Harbor, once so polluted they were memorialized in the song “Dirty Water,” are now clean enough that shellfish from its outer communities can be eaten without first running them through a purification plant. The turnaround is another testament to a remarkable transformation of the Boston Harbor since the 1980s.⁠ ⁠ The Massachusetts Division of Marine Fisheries recently said Winthrop, Hingham, and Hull can allow