Limited sources of water in the world imposed many countries to give 'real' tariffs on water, or in other words, water privatization. Long time ago, water is a public good which people could access, freely and cheaply. In the future, there are tendencies that water can no longer be used as goods, but become private goods, where only certain people who could pay the 'real' tariff of wait could have access to which. Water privatization has undergone in many countries, as well as fit developed, developing, and less developed countries. Besides the limited sources of water, th inability of the government (especially in third world countries) to provide water service for ih citizens is getting worse. Governments can no longer give subsidy to its citizens by giving che water's tariff meanwhile the costs to provide clean water is quite high. Governments have limit choice, so privatization becomes the ultimate solution for this problem. Moreover, the World Bo and Asian Development Bank are very keen on these water privatization. The consequence o water privatization is the significant increase of water tariff. It means that only rich people will ha access to clean water while the poor can not pay for the high water tariff. This becomes the cent problem of water privatization happened in many countries, for example in South Africa, where 2i people die because inaccessibility of clean expensive-water. Meanwhile, water privatization in Indonesia that has been legalized through UU No. 7, 2004 is underway. Would water privatization become detrimental to Indonesia's poor people?