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State Planning Policy 2.9 – Water 

State Planning Policy 2.9 Water (SPP 2.9) has been introduced to ensure that planning and development considers water resource management, applying appropriate measures to protect water quality and quantity and deliver sustainable outcomes for both water resources and development.  

If your property is located within a Public Drinking Water Source Area (PDSWA) or a drainage easement of watercourse is within your site, SPP 2.9 may need to be addressed in your proposal. 
 

SPP 2.9 identifies circumstances where additional investigations, documentation, or agency consultation may be required prior to development approval. 

Additional information may be required for: 

  • any proposal that involves a Structure Plan or similar 
  • any development application in public drinking water source areas 
  • when a waterway/drain is within 200m of a proposal 
  • a proposal requires the use of groundwater or surface water 
  • a proposal requires the clearing of native vegetation 
  • industrial proposals or manufacturing 
  • proposals that are on or adjacent to a contaminated site 

Depending on the nature and location of the proposal, you may be required to engage suitably qualified professionals to prepare supporting documentation such as: 

  • drainage or stormwater management plans 
  • water management reports 
  • geotechnical or groundwater investigations 
  • on-site wastewater assessments 
  • flood risk assessments 

Examples of applications which may require additional supporting documentation are: 

  • any development application in a public drinking water source area 
  • any proposal to modify or interfere with a waterway/drain 
  • proposals with a waterway/drain within 50m of the locations of works 
  • proposals that require the use of groundwater or surface water 

DWER Contact 

Early consideration of these matters can assist in avoiding delays during the Development Application / Subdivision Application process. For further guidance and site-specific advice, landowners and applicants are encouraged to contact the Department of Water and Environmental Regulation (DWER) where the proposal is not captured in one of the matters above. Their details are captured below: 


Disclaimer    

This information sheet is for guidance purposes only.  This information sheet relates to the general development application process and does not account for special or extenuating circumstances.  The City of Kalamunda assumes no responsibility or liability for any errors or omissions contained in this information and shall not be held responsible for the misinterpretation or misapplication of the information contained in this document.  In some instances, the local government may require additional information from the applicant, referral to related government agencies or public advertising beyond the scope of a standard application to make an informed decision on the application. 

© City of Kalamunda 2026