There are two types of sewage backup.
The first one is an internal plumbing problem which only occurs when using internal plumbing fixtures. If this occurs please contact a plumber.
The second type of back up is when sewage is backing up into your house from the City Sewer System. If this occurs contact the Sewer Department during normal business hours at 860-638-3500. After hours contact the Central Dispatch by calling 860-346-8621, they will contact the on call Sewer Department Personnel.