Water Sensitive Urban Design Report

A WSUD (Water Sensitive Urban Design) Report is a document that is required on almost every type of development whether it be Residential, Residential Extension (Exceeding 50 sqm) Commercial, Industrial, or an Apartment Complex that council would like the building to achieve a certain reduction in the following:

• Suspended solids – 80% retention of typical urban annual load
• Total Nitrogen – 45% retention of typical urban annual load
• Total Phosphorus – 45% retention of typical urban annual load
• Litter – 70% reduction of typical urban annual load

   

These reductions are shown through various available tools such as:

• MUSIC (Model for Urban Stormwater Improvement Conceptualisation)
• STORM Calculator provided by Melbourne Water
• InSite Water tool (Only accepted/requested by few Councils)

   

The assessment is based on the entire proposed site & buildings and all impervious areas within it. An initial assessment without any treatment measures other than water tanks take place to see how the site can perform utilising only water tanks. If however these do not succeed, we communicate with the parties involved and start using other treatment methods such as raingardens, buffer strips, pervious paving & enviss pits. 

After we achieve a score of 100% STORM score or greater, we then create a clear roof catchment plan on what is required to achieve WSUD excellence and meets the council expectations.