A number of planning system changes were made in October 2018 to improve existing standards for stormwater management, extending requirements to a broader range of developments and land uses, as well as subdivisions. These changes introduced new requirements for developments constructed on residential, commercial, industrial and public land, which means that most new developments will need to retain, reuse and/or treat the rain that falls on the site. If you would like more information about Victoria's Stormwater Planning Provisions visit DELWP's Victoria Planning Provisions (VPP) and Planning Advisory Note 75.
The following development types are subject to Victoria’s stormwater planning provisions through the Victoria Planning Provisions (VPP):
- Residential subdivision
- Residential multi-dwellings (e.g. townhouses)
- Commercial subdivisions and developments
- Industrial subdivisions and developments
- Public use developments
These provisions ensure that stormwater generated from these forms of urban development is managed in an integrated way to mitigate the impacts of stormwater runoff on the environment, property and public safety. These provisions require (amongst other additional criteria) the application to meet ‘best practice’ standards as defined by the Urban Stormwater Best Practice Environmental Management Guidelines (‘BPEM’), which currently include:
- 80% retention of the typical urban annual load for Suspended Solids (SS)
- 45% retention of the typical urban annual load for Total Phosphorous (TP)
- 45% retention of the typical urban annual load for Total Nitrogen (TN)
- 70% reduction of typical urban annual load for Litter (any anthropogenic material larger than 5mm)
- Maintain flows/discharges for the 1.5 year ARI at predevelopment levels
This tool is just one of a number of initiatives currently in development by DELWP to support the industry with implementing these planning policy changes. To find out more, please contact Mandy Bolton.