At the current rate of progress, it will be the twenty-second century before sanitation for all is a reality. Clearly this is too slow. While the challenge is significant, history shows that rapid progress is possible. To accelerate progress, sanitation must be defined as an essential public good – one that is foundational for a healthy population and prosperous society. Many countries have made rapid progress in sanitation coverage within a generation, transforming lives, the environment and the economy. Every country that has made rapid progress has had strong political leadership, with government playing an important role in policy, planning, mobilizing investment and regulating services.