- General Director
- Management (2 divisions)
- Administration Division
- Planning Billing Division
- Technology (3 divisions)
- Water Distribution Division
- Water Source Division
- Facilities Division
- Water Service Facilities Management Office
- Songchon Filtration Plant Office
- Wolpyung Filtration Plant Office
- Shintanjin Filtration Plant Office
- Water Service Technology Laboratory
- Estern Area Waterworks Office
- Central Area Waterworks Office
- Western Area Waterworks Office
- Yuseong Waterworks Office
- Daedeok Waterworks Office