Construction has begun on the South River Tunnel and Pump Station as part of the City's Sanitary Sewer Overflow program in the South River Basin.  The South River tunnel will collect flow from existing sanitary sewers and transport it to a newly constructed pump station at the South River Water Reclamation Center. Deadline for the completion of the tunnel and pump station is July 1, 2011.

I don't know all the technical aspects of this, but I imagine this will lead to improved water quality in our lake.