News Water outlook: More growth, with one major concern Growth can be met by the current supply with one major caveat: climate change. by . Published October 03, 2023 Link copied! Copy failed! “Our biggest challenge across all of our systems is climate change,” according to Westernport Water. Candowie Reservoir at Grantville was first commissioned in 1964 and has a capacity of 1130 ML. Updated September 04, 2025 5:12 pm | 4 months ago Link copied! Copy failed!