Innovative ideas about water efficiency. Climate change means that we will have more unpredictable weather. Some of Australia is in drought and some areas have plenty of water. That changes each year. Water efficiency was a focus around the millennium drought. We want new, innovative and untapped ideas on ways to be efficient with water use. These ideas could include how we use water, how we can save water, how we waste water, how everyone can make a difference in using water wisely, water rules and ideas on saving water for the future.