In this blog to accompany the launch of the State of the World’s Sanitation report, Kelly Ann Naylor and Bruce Gordon, Heads of WASH for UNICEF and WHO respectively, make the point that no country has achieved high income status without first investing in sanitation. So, what can we learn from countries that could be called ‘sanitation champions’? Read the article to see how sanitation success can be accelerated and how the economic benefits far outweigh the costs.