One of the main causes of ground subsidence is leakage from aging sewer pipes. Therefore, the goal is to investigate and analyze old and defective sewer pipes, establish a basic plan for repairing the damages and defects, and ensure smooth maintenance and management. This aims to alleviate public concerns, create a safer urban environment, extend the lifespan of facilities, and contribute to the improvement of public water quality

1. #Sewerage
2. #Busan
3. #Domestic