Senator Paul Simon Water for the World Act of 2009

Senator Paul Simon Water for the World Act of 2009 - Amends the Foreign Assistance Act of 1961 to direct the Administrator of the United States Agency for International Development (USAID) to establish the Office of Water within the Bureau for Economic Growth, Agriculture, and Trade to: (1) give assistance to provide safe water and sanitation for people worldwide; and (2) be headed by a Director for Safe Water and Sanitation. Outlines the Director's duties.

Requires the Secretary of State, in order to increase the capacity of the Department of State to address international issues regarding safe water, sanitation, integrated river basin management, and other international water programs, to establish a Special Coordinator for International Water. Outlines the Special Coordinator's duties.

Amends the Senator Paul Simon Water for the Poor Act of 2005 to: (1) revise requirements concerning the safe water and sanitation strategy; (2) provide for the establishment of a program to build the capacity of host country institutions and officials responsible for water and sanitation in countries that receive assistance to provide safe water and sanitation under the Foreign Assistance Act of 1961; (3) expand the list of activities that may be supported by assistance furnished by the President for programs in developing countries to provide affordable and equitable access to safe water and sanitation; and (4) require the report regarding water for peace and security to include an assessment of political tensions over water sources and a multidisciplinary assessment of the expected impacts of global climate change on water supplies in 10, 25, and 50 years.