We are on the lowest part of the campground and at the end of the sewage line, the sewage cap got lodge right before the sewage enters the septic tank, my neighbor which is on a different sewage line had a backup with hers to the next day...they were there and caught it in time...the sewer pipes are very old and and thin, the sewer pipe was actually smashed...My neighbor and I are in the oldest part of the campground...Still waiting on insurance to settle with us...My insurance is Progressive, first time I have ever used them and seems like they are taking forever..it will be 2 weeks Thursday.