Estache and Goicoechea present an infrastructure database that was assembled from multiple sources. Its main purposes are: (i) to provide a snapshot of the sector as of the end of 2004; and (ii) to facilitate quantitative analytical research on infrastructure sectors. The working paper includes definitions, source information and the most recent data available for 37 performance indicators that proxy access, affordability and quality of service. Additionally, the database includes a snapshot of 15 reform indicators across infrastructure sectors.