The water of the Yarra River has supported many plants and animals, as well as generations of people, and has shaped the culture of the country. By analyzing the percentage of water use in the Yarra River, it was found that too much water is used for irrigation, and too little water is released for environmental use. The design aims to reuse urban stormwater runoff and municipal wastewater by collecting rainwater through storm drainage pipes and using wetland in the Yarra Floodplain to purify and reuse it for wetland irrigation and seasonal environmental water release.
The pattern of the purification pools system simulates the real billabong which shows a certain degree of respect for Aboriginal culture. The release of purified water follows the dynamic flow changes of the Yarra River under natural conditions, and in the future, the Yarra River purification system will be opened or closed according to different objectives, hoping to shape an increasingly healthy ecosystem.