The Angang Sewage Disposal Plant is a sewage treatment plant located in the city of Gyeongju, North Gyeongsang province, South Korea. It began operating in April, 2005 by the co-investment of the Government of North Gyeongsang and Gyeongju City with a fund of 44,300,000,000 won to install the facilities to prevent the pollution of Hyeongsan River which is a main water source for Gyeongju and Pohang residents. The plant is located on a spacious site with 39,000 m2 in Homyeong-ri, Gangdong-myeon where nature friendly facilities are also built to provide recreational venues for the locals. Through intercepting sewer pipes with a 56.1 km length and 14 pumping stations, the plant has a capacity in dealing with 18,000 tone of domestic sewage per day that comes from Angang-eup, and Gangdong-myeon