The concept of full supply-cost pricing enacted in this legislation, presented a significant departure from prior reclamation law. The full supply-cost rate is an annual rate intended to repay over time the portion of the federal government's expenditures for project construction allocated to irrigation, including the operation and maintenance expenses, with interest. Since the 1982 Reclaimation Act, the 1986 statutory requirement and the 1992 Central Valley Project Improvement Act have generated notable increases in irrigation prices in California's Central Valley (Wichelns, 2010b). For example, the Australian irrigation sector has found it harder to communicate to the wider population the economic benefits of irrigation. So irrigation water suppliers are examining better ways to communicate.