Sewer Main Line Replacement in Coronado CADetailsClient Residential ClientCompleted 6/3/2021Location Coronado San Diego CACategorySewer RepairShare this page... Back To GalleryReplaced sewer mainline by the trenchless method. Installed 30 feet of 4-inch sewer pipe. The pipe material is high-density polyethylene pipe. No need to trench, replaced the pipe underground with the same diameter pipe. Project Photos