My neighbor had a new water line installed. When the company they hired pushed the water line through the ground they hit and broke my sewer line, which is actually a community sewer line that I share with at least one other neighbor. Since they had their water line installed I have been getting sewage backing up into my basement about once every 3-4 weeks. I've tried talking to my neighbor and the company that installed their water line but haven't gotten anywhere with them. The company that installed the water line says its not their fault because they didn't know the water line was there and my neighbor doesn't want to pay to get it fixed. Does anyone here have any suggestions for me? Can I go to the water department and get their water line condemned until they get it fixed? I'm not sure what I can do short of hiring a lawyer and sueing them so anything would help. thank you very much.