Before Korea achieved independence in August 1945, Seogwipo Jeongbang, Hogeun, and Sanghyo were the only three areas in Jeju that had a temporary sewage system. People had to carry drinking water in a Mulheobeok until Jeju’s first modern sewage system called Geumsansoowon was introduced in August 1957. Following the development of Geumsansoowon, Sancheongdan and Yeonanji temporary water supply system construction, Eoseungsaeng reservoir develompent project, Oedocheon and Gangjeongcheon streams water source development project, Seorim and Ongpo water source development project, and groundwater well development projects were carried out from the 1960s, gradually solving the water shortage problem in Jeju. The island achieved 99.9% of water supply system implementation rate in 1985. In particular, Eoseungsaeng reservoir development project kicked off when Jeju Water Resource Development Plan was personally drafted by President Park Chung-Hee, and the issue of water shortage in Jeju’s mid-mountain area was fully solved after completing the construction of a reservoir with a capacity of 100K tons in December 1971.

Groundwater development