Pride Plumbing was called out for sewage backing up into the building. We used a water pressure device at a manhole (back towards the building) and cleared a blockage in the main outside sewer septic drain line. We tested multiple fixtures for proper drainage with no issues. We also provided a cost estimate to replace a leaking 3 1/2-inch gasket on a 3-compartment stainless-steel commercial sink's rotary waste.