IWCM and WSUD Definitions

The National Water Commission has defined Urban Integrated Water Cycle Management as:
The integration of water supply, sewerage and stormwater, so that water is used optimally within a catchment resource, state and national policy context.  It promotes the coordinated planning, development and management of water, land and relation resources (including energy use) that are linked to urban areas and the application of WSUD principles within the built urban environment. 

 
Figure 1

Water Sensitive Urban Design seeks to minimize the extent of impervious surfaces, integrate stormwater and landscaping water flows and mitigate changes to the natural water balance. 
National Water Initiative defines Water Sensitive Urban design as:
the integration of urban planning with the management, protection and conservation of the urban water cycle that insures urban water management is sensitive to natural hydrological and ecological cycles. 

Water Sensitive Urban Design key principles are:

• Protect Public Health and Sanitation
• Protect the Natural System
• Protect the Water Quality
• Reduce demand on reticulated water system
• Reduce treated effluent, minimizing wastewater
• Add Value while Minimizing Development Cost
• Local Detention
• Functional Landscaping (stormwater, run off)