What do you do when you're on vacation and you get a phone call about a clogged commode. I get a call from a tenant who usually is not worrisome.  He says there is sewage coming into the tub mostly when the washer drains..Either way it's a disaster.  After some thought and research online I see that it may be backed up at the street..A city problem. city comes out and checks it out. sure enough, city problem.  Moral to the story is......