Liners are installed in sewers to correct problems caused by:

Liners are primarily installed in sewers to address the issue of infiltration. Infiltration occurs when groundwater enters the sewer system through cracks, joints, or deteriorated sections of piping. This can lead to increased volumes of water in the sewer, which can overwhelm treatment facilities and create other operational problems.

Installing liners can help create a barrier that prevents further infiltration from occurring. The liners effectively seal off the sewer pipes, reducing water intrusion and improving the overall hydraulic performance of the system. Furthermore, using liners can often extend the life of the existing sewer infrastructure without the need for extensive excavation, making it a cost-effective solution for managing infiltration issues.