Water Efficient Landscaping - WEc1 Implementation Reduce by 50% Installed rainwater retention system using water features, bioswales and rain gardens to delay stormwater runoff and improve non-potable water availability for natural irrigation Installed 7.5 m3 (1,982 gal) cistern to store rainwater for irrigation Installed high efficiency irrigation technology Installed temporary irrigation systems for green roof plant establishment to be removed within 2 years of installation Required to reduce potable water consumption for irrigation by 50% Actual potable water consumption reduction for irrigation is 100% No Potable Use or No Irrigation Requirement achieved through WEc1.1