Excavation, extension, backfilling and re-settlement of rainwater pipes.

Sewer pipes or sewage pipes, which is an underground pipe or tunnel system used to transfer waste water from homes and shops [1] (rain water is not transported). To treat sewage or dispose of it in a healthy way. Sewer pipes are part of a system called a sewer system or sewerage. Sewage pipes are made of polyvinyl chloride (PVC). Sewage pipes are pipes that transport sewage from the gathering areas. Sanitary sewers are much smaller than collector sewers, which are also designed to carry surface water runoff. Wastewater may be treated to control water contamination before it is discharged to surface water. The sewage system is designed to transport the sewage separately by itself. In municipalities concerned with sanitation, sanitary sewers are distinguished from combined expenditures, which combine wastewater and rainwater in one pipe. Sewer systems are beneficial because they prevent floods from overflowing sewers.