When World Water Day was first celebrated in 1993, some 5.3 billion people lived on the planet. Of these, 512 million lived in sub-Saharan Africa, where only 49 and 26 percent, respectively, had access to an improved water source and sanitation facility. Today, on the seventeenth World Water Day, the global population includes 6.7 billion people, of whom 818 million live in sub-Saharan Africa, where 58 and 31 percent, respectively, now have access to water supply and sanitation services. This is a moment to celebrate the additional 223 million sub-Saharan Africans who have access to a water supply and the 120 million who now can access sanitation, but we should also focus on the continuing low rates of access. While tremendous accomplishments have been made, a great deal of work remains undone. Given the tremendous unmet demand for water supply and sanitation, what is being done to facilitate change and accelerate the rate at which these critical services are provided to a billion or so people globally who lack these critical services? A difficult problem like this requires innovation, experimentation, and a willingness to take risks to find better solutions. MCC was created as a new approach to development assistance: a firm five-year window for implementation, full commitment of the funds upon compact signing, untied assistance, and host country ownership, including proposal development and implementation. This approach reflects the best thinking about development assistance, as articulated in the Paris Declaration. In this, MCCs seventh year, we are looking at some important lessons learned, like carefully integrating social and environmental factors into project design and implementation, identifying innovative contracting approaches that accelerate the project life cycle without sacrificing quality, and promoting private sector participation. MCC works closely with partner countries to identify high value water supply and sanitation projects and water resource management and productivity projects that respond to the countries development priorities. MCC programs in Lesotho, Mozambique, and Tanzania include MCCs three largest water supply and sanitation projects, covering rural and urban water and sanitation, non-revenue water management, and source development. In addition, Mali, Burkina Faso, Armenia, Senegal, and Moldova are pursuing major irrigation and water resource management projects. To date, MCC programs have funded approximately $528 million in water supply and sanitation and $769 million in water resource management and irrigation. MCC partnered with the Government of Mozambique to target a traditionally underserved area: water and sanitation investments in urban areas and small towns. Secondary urban areas are particularly difficult environments in which to build sustainable water supply and sanitation systems because, by definition, they lack economies of scale, are more remote, have higher costs, have difficulty attracting and retaining staff, and are typically less affluent—all of which have negative implications for sustainability. Yet, a majority of world population growth will occur in urban areas and much of that will occur in these secondary urban areas. Addressing the projected water supply and sanitation needs of these communities will be one of the sectors most pressing challenges in the coming decades. In advancing MCC’s mission of global poverty reduction through economic growth, we will continue to work with partners committed to expanding access to water and sanitation.