Based on the National Comprehensive Sewerage Plan, a 20-year unit watershed sewerage development plan for Andong and Imha Dam watershed, covering a total area of 4,535.58 km² and a planned population of 368,253 people across 10 cities and counties, has been established. The primary objective of this plan is to achieve water quality standards in public water bodies and improve the living environment through the installation, integrated operation, and management of sewerage systems in the region.

1. #Domestic
2. #Gyeonggi-do
3. #Sewerage