The Modernization of the Water and Sanitation Sector Technical Assistance Project for Mexico aims: (i) to improve the efficiency of Mexico's water supply and sanitation sector through strengthening the sector policies at the federal and state level; and (ii) to develop and demonstrate replicable models of successful and sustainable provision of water and sanitation services. The project consists of the following components: Component 1) will provide assistance to the Federal and State Governments for developing a series of studies and activities associated to the strengthening of the sector policy making and planning institutions. Component 2) will support the development of replicable models for an efficient and sustainable provision of water supply and sanitation services (success cases), through institutional reforms and improvement of utility performance.