Reed Elsevier is a global provider of world-class information and tools that help our customers advance science, improve medical outcomes, enable better legal decisions, evaluate risk, forge business relationships and gain business insight. All five business units of our company have a growing portfolio of products and services that advance environmental knowledge and understanding. We are committed to using our extensive networks and expertise to facilitate the exchange and dissemination of useful information about improving access to sustainable water supply. The Reed Elsevier Environmental Challenge is awarded to the two projects that best demonstrate how they can provide sustainable access to safe water where it is presently at risk and/or access to improved sanitation. Projects must have clear practical applicability, address identified need, and advance related issues such as health, education, or human rights.