In 2006 the ERA undertook an inquiry into the Water Corporation's water storage charges to the South West Irrigation Cooperative (Harvey Water). The ERA published 12 public submissions in response to an issues paper and a draft report.
In addition to the information raised in submissions, the ERA drew on a number of reports prepared by Consultants in developing its recommendations.
The ERA’s final report was delivered to the Treasurer on 12 April 2007 and tabled in Parliament on 9 May 2007.
A revised final report was delivered to the State Government on 22 June 2007. The revised final report incorporated a number of changes to the financial model used by the ERA for the final report. The changes arose as a result of due diligence carried out by Harvey Water and the Water Corporation in preparation for the signing of a new Bulk Water Supply Agreement. The revisions did not alter the conclusions of the final report, although they did increase the charges to Harvey Water.