SEPP 65 - Apartment Design Guide

04 I Building4V Water management and conservationWater sensitive urban design is the integratedmanagement of water in urban areas. It takes into accountall of the elements of the urban water cycle includingpotable (drinking quality) water, rainwater, wastewater,stormwater and groundwater.Bio-filtration swalesConstructed wetlandWater feature using recycled waterOpen spaceParks with detention capacityBest practice water management considers watermeasures at all stages of the project. This ranges frominitial site planning measures that maximise deep soilareas for water infiltration to detailed building design thatcaptures and recycles stormwater and wastewater forbuilding services.The Building Sustainability Index (BASIX) ensures that allnew dwellings are designed to minimise potable water useand reduce greenhouse gas emissions. To support therequirements of BASIX there are a number of planningand design considerations that are relevant to apartmentdevelopments.Figure 4V.1Streets and parks of larger developments should be designedto treat stormwater runoff and accommodate flooding eventsClean waterContaminated water1. First flush diversion valve2. Diversion to water feature spout1163. Over flow from water feature4. Retention tank5. Detention tank6. Pump and filter107. Over flow from courtyard detention8. Water feature supply15542 1493871213169. Pavement runoff10. First flush roof water (15mm)11. Infiltration to water table12. Biosink/wetland filter system13. Irrigation6171114. Water feature15. Municipal storm water system16. Basement parking17. Water tableFigure 4V.2Stormwater quantities can be reduced and water quality increased by circulating rainwater througha connected water feature and wetland system124 DRAFT | Apartment Design Guide I September 2014