Sewer Repair Dorchester. A sewer main in Dorchester had a three foot section that needed repair. Instead of lining the entire sewer main from manhole to manhole, other options had been brought to the table. A sectional “Point Repair” was discussed as the possible solution as it was much cheaper than relining the entire Dorchester main sewer and it would only take a few hours to cure. If you reside in Dorchester or the surrounding Boston neighborhoods and would like to see a live sewer repair, call us to schedule.