UPDATE, Wednesday, 8:36 a.m.: MassDOT and Barletta Construction say the outage will affect at most 40 homes. It will extend down South only as far as the two apartment buildings nearest the corner of South and New Washington.
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The Department of Transportation has sent out a warning that residents of several streets around the Casey Arborway project will have their water cut off on Thursday. The interruption is so Boston Water & Sewer can move a hydrant.