The efficient functioning of sewer systems is vital for maintaining public health and environmental sustainability. However, sewer pipe infiltration poses a significant challenge, leading to various issues such as structural damage, system overflows, and contamination of water sources. In this article, we will explore the concept of sewer pipe infiltration, its causes, and the available techniques for its effective repair. What is Sewer Pipe Infiltration? Sewer pipe infiltration refers to the unwanted entry of groundwater or surface water into sewer lines. It occurs when water infiltrates through cracks, joints, or deteriorated sections of sewer pipes, thereby increasing the overall volume of flow in the system. This infiltration can overwhelm the sewer infrastructure, leading to reduced conveyance capacity, increased treatment costs, and potential health hazards. Causes of Sewer Pipe Infiltration Aging Infrastructure: Over time, sewer pipes may deteriorate due to material corrosion, aging, or inadequate maintenance. Cracks, fractures, and joint separations can develop, allowing water infiltration. Poor Installation: Improper construction practices, such as insufficient compaction or misaligned joints during pipe installation, can create entry points for water infiltration. Ground Shifting: Natural ground movement caused by geological factors, like soil settlement, seismic activity, or freeze-thaw cycles, can lead to the misalignment or