I do not have specific information about the sourcing of "Coles Spring Water." Coles is a supermarket chain in Australia, and they offer a variety of products under their own brand, including bottled water. The specific source of their spring water might vary over time and by location.
If you're interested in learning more about the sourcing of Coles Spring Water, I recommend checking the label on the bottle for information about the water's source. Additionally, you can visit the official Coles website or contact their customer service for more details about the origin of their spring water products.