The Roofwater Harvesting Evaluation Toolkit helps water supply planners and practitioners assess the feasibility of roof water harvesting systems in regional Australia. Developed by Wannon Water as part of the Regional Roof Harvesting Project in Warrnambool, the toolkit supports decision-making by allowing users to compare roof water harvesting with other potential water supply options.
The toolkit enables users to estimate capital and operating costs, calculate annual water yields, and assess the overall financial viability of roof water harvesting systems. It provides a structured way to evaluate infrastructure requirements, storage and transfer systems, and treatment considerations, helping organisations understand the long-term cost per megalitre and compare it with alternative water supply solutions.
Roof water harvesting can play an important role in supporting growing regional communities by providing an additional and relatively clean source of water. Tools like this help planners and water authorities make informed investment decisions and explore innovative approaches to augmenting water supply while reducing pressure on existing systems.
This resource is particularly useful for water authorities, planners, engineers, and councils involved in water supply planning, infrastructure assessment, and urban development projects.
