Reported costs of desalinated water per cubic metre are usually given in a summary form. However, summary costs do not specify what is included in the cost and may or may not contain such cost factors as land acquisition and regulatory costs or contingency factors that can significantly influence the cost of desalination. A large review of published desalination costs shows a range of $0.27/m3 to $6.56/m3 for seawater desalination and SO.