Lack of progress on sanitation threatens to undermine the child survival and health benefits from gains in access to safe drinking water, warn WHO and UNICEF in a report tracking access to drinking water and sanitation against the Millennium Development Goals. The Joint Monitoring Programme report, Progress on Sanitation and Drinking Water: 2015 Update and MDG Assessment, says worldwide, 1 in 3 people, or 2.4 billion, are still without sanitation facilities – including 946 million people who defecate in the open. What the data really show is the need to focus on inequalities as the only way to achieve sustainable progress. The global model so far has been that the wealthiest move ahead first, and only when they have access do the poorest start catching up. Access to improved drinking water sources has been a major achievement for countries and the international community. With some 2.6 billion people having gained access since 1990, 91 per cent of the global population now have improved drinking water – and the number is still growing. In sub-Saharan Africa, for example, 427 million people have gained access – an average of 47,000 people per day every day for 25 years.