GWCN and the World Toilet Organization (WTO) started a collaborative partnership on research and networking.

Founded on 19 November 2001, World Toilet Organization (WTO) is a global non-profit committed to improving toilet and sanitation conditions worldwide. WTO empowers individuals through education, training and building local marketplace opportunities to advocate for clean and safe sanitation facilities in their communities. Breaking the silence on the sanitation crisis is at the heart of WTO’s efforts.
WTO established World Toilet Day and the World Toilet Summit in 2001; this was followed by the World Toilet College in 2005.
Through its various initiatives, WTO continues to provide an international platform for toilet associations, governments, academic institutions, foundations, UN agencies and corporate stakeholders to exchange knowledge and leverage media and corporate support in an effort to promote clean sanitation and public health policies.
In 2013, WTO achieved a key milestone for the global sanitation movement when the UN General Assembly adopted the Sanitation for All resolution to designate 19 November (WTO’s founding day) as an official UN World Toilet Day.