Comment: City laid new sewer pipes on my street. Since then, when I use my washing machine, sewage backs up in my tub & toilet fills and gurgles. Also, water seems to flow from under the house to my alley. I never had a problem before. City says I need to have a plumber look at my pipes .
Comment: I believe there is a clog in the main sewer line between the street and the house. We've had problems with clogs before in the same area. I'm pretty sure the line just needs to be rooted.