Global Water Challenge (GWC) is a coalition committed to achieving universal access to water, sanitation, and hygiene (WASH). It catalyzes partnerships to fund innovative WASH programs. The WASH Sustainability Charter outlines best practices across strategy, governance, service delivery, finance, and reporting. Over 100 organizations have endorsed the voluntary Charter, which aims to strengthen sustainability across the sector. GWC works to align diverse initiatives and change business as usual through tools like the Charter and by continuing discussions on sustainability.