The 2010 WHO/UNICEF JMP report Progress on Sanitation and Drinking-water 2010 Update was published yesterday. No real surprises, nor indeed much progress, if any: 2.6 billion are without improved sanitation, 1.1 billion of whom still have to practise open defecation. The report's Fast Facts give the basics. As for drinking water, the good news is that the world's on track to meet, even exceed, the MDG target.
[You can find all the JMP reports since 2000 here.]