It is only by investing in both water and sanitation that the full health benefits of these services will be realised for the world's poorest people. We know that diarrhoea is the single biggest killer of children in sub-Saharan Africa and on current trends it will be around 200 years before Africa has universal access to both water and sanitation.
A few years ago, the Country Directors for Women for Women International in Congo and Rwanda were crossing the bridge that connects their two countries. The last 100 years have been about getting the vote and women in the west making many strides towards equality, though there is a long way to go. We don't want it to take 100 years, but we are now calling for all women to be equals - whether it's in parliaments, the boardroom and, in war-torn countries, on peace councils.
But this World Toilet Day (19 November), there are 2.6 billion people across the world who have nowhere safe to go to the toilet. That's two out of five people for whom a toilet is an unimaginable luxury. Meanwhile, almost 900 million people are forced to risk their lives on a daily basis by drinking dirty water because they have no other option.