Real-time tracker helps you find out where the "dirty water" is in Boston

Boston's combined sewage and storm drain system was built in the 1800s. When it rains a lot, those old drains dump sewage into our rivers and bays so they don't back up our houses.

Sewage overflows can make swimming in or even touching that water dangerous, and not everyone knows when those overflows happen. But now, thanks to an interactive tracker from WBUR, you can track overflows in real time.