- 2024. 01. 01. Facilities Management Office Village Water Supply Team is established
Gunwi Water Purification Office is established
- 2022. 07. 22. Safety Division, Business Management Department Planning and Budget division (created)
Water Supply Department Smart Water Management TF, Dalseong Office Management Division (abolished)
General Affair & Planning Division → General Affairs Cooperation Division,
Management Audit Division → Fee Audit Division,
Financial Operations Division → Accounting Property Division,
Gachang Water Purification Plant Mechanism Team → Water Purification Team (renamed) - 2020. 07. 10. Water Policy → Production facilities, Water Supply & Drainage → Water Supply (renamed)
Water Supply Department Water System Management Division (created)
- 2019. 01. 01 General Affairs & Planning, Management Audits, and Finance Operations (consolidated)
Water Quality Management → Water Quality, Mechanics & Electricity → Mechanics & Electricity, (renamed)
Water Supply, Drainage → Water Supply & Drainage, (consolidated)
Management, Facilities Operation, (created)
Facilities Management Office Water Quality Team is established
- 2015. 07. 21 Established the Management Innovation Department under the Business Division. Changed the Business Department to the Revenue Management Department.
- 2015. 04. 01 Established the Waterworks Safety Team in the Water Production and Quality Division.
- 2015. 03. 01 Abolished the Assignment System → Changed to the Team System
- 2012. 01. 01 Dissolution of Water Resource Development Team
- 2011. 03. 03 Dissolution of Duryu Purification Plant Organization Team
- 2009. 10. 12 Duryu Water Purification Office is closed
Water Quality Research Institute and the Department
of Water Quality Analysis is established - 2009. 06. 10 Water Quantity and Facility Organization is renamed
to the Water Quality Management Organization
Facilities Division → Water Production and Quality Division
Facilities Department → Water Supply Policy Department
Production Management Department → Water Quality Management
Department - 2008. 08. 05 Headquarter Team is renamed as Headquarter Department
Water Quality Inspection Office is renamed as the Water
Quality Research Institute
Munsan Water Purification Office is established - 2007. 01. 08 Headquarter Department is changed to Headquarter Team
- 2006. 06. 12 Affairs Department is renamed as Business Department.
Leakage Prevention Department is established.
Facilities Division → Facilities Department,
Production Management Department, Mechanics and Electricity
Department
Leakage Prevention Division → Leakage Prevention Department,
Drainage Department, Water Supply Department
Facilities Management Office’s Water Purification Department
is renamed to Mechanics and Electricity Department - 2004. 03. 10 Water Quality Inspection Office and Water Quality
Research Department is established, as well as the Maegok Water
Purification Office and Facilities ManagementDepartment - 2004. 01. 01 Headquarters’ duties are cancelled. Department system is established
- 1998. 10. 09 Jukgok Water Purification Office is established
- 1997. 01. 15 Jungbu Office and Nambu Office is integrated into the Jungnambu Office
Dissolution of Gongsan Water Purification Office
(integrated into Facilities Management Office) - 1995. 03. 01 Transferred to Dalseong Office
- 1992. 11. 14 Gosan Reservoir Office is established
- 1991. 04. 25 Water Quality Inspection Office is established
- 1989. 09. 01 Established the Waterworks Business Headquarters.
- 1988. 05. 09 Established the Dalseo Office.
- 1987. 04. 01 Changed name to “Water and Sewage Bureau” after merging with the Sewage Department of the Construction Bureau.
- 1984. 01. 18 Established the Dasa Reservoir Office.
- 1981. 01. 16 Established the Gongsan Reservoir Office.
- 1980. 04. 01 Established the Suseong-gu Waterworks Office.
- 1978. 10. 01 Established the Donggu and Seogu waterworks offices.
- 1970. 01. 01 Established the Junggu, Namgu, and Bukgu waterworks offices.
- 1969. 01. 29 Designated as a local public enterprise.
- 1969. 06. 25 Established the Gachang, Sangyeok, and Nakdonggang reservoir offices and the waterworks facilitymanagement office.
- 1965. 01. 01 Established a waterworks special account.
- 1964. 12. 05 Promoted the Waterworks Department to the Waterworks Bureau.