The Stone Family Foundation has launched a prize for innovative and entrepreneurial initiatives to get clean drinking water to people who need it in Sub-Saharan Africa, South Asia, and Southeast Asia. The Foundation is looking for ideas that are proven in practice, and that are ready to be expanded. The Foundation will award up to five prizes, each of £100 thousand. The competition is open to individuals, NGOs, social enterprises, and other nonprofit organizations -- and to for-profit organizations that can demonstrate their social impact and need for the prize. The application deadline (for Round 1) is 22 March 2012. Link