It lowers the risk, but won't always prevent it. If there is a lot of flooding/standing water, it can breach into the sanitary sewer system particularly through manhole covers, other access points, or even other communities. If you see 3-4 feet of standing water in a roadway, that is a major concern because it could find its way into the sanitary sewer and the as things start to back up it may find its way into your basement.
Bookmarks