This article analyses the extent to which Israeli-Palestinian water relations were affected and transformed by the Oslo process. Focusing in turn on the management of water systems and supplies, the monitoring of water resources and the development of new supplies, the article suggests that many of the seeming and much-lauded achievements of the Oslo process were more cosmetic than real. Comparing Israeli-Palestinian water relations before and since the onset of the Oslo process, the article contends that the Oslo agreements did little more in this particular sphere than to dress up and discursively repackage Israel's domination of the West Bank water sector in a new vocabulary of Israeli-Palestinian ‘cooperation’.