In mid 2011, the Foundation announced in its new "Water, Sanitation, Hygiene Strategy Overview" that its funding now focuses primarily on sanitation, particularly in sub-Saharan Africa and South Asia, because access to improved sanitation is lowest in those regions. Their grant-making focus has been since 2011 on sanitation science and technology ("transformative technologies"), <answer>delivery models at scale, urban sanitation markets, building demand for sanitation, measurement and evaluation as well as policy, advocacy and communications</answer>.
What models have been delivered
delivery models at scale, urban sanitation markets, building demand for sanitation, measurement and evaluation as well as policy, advocacy and communications