The Government of Nepal has instituted the Ministry of Water Supply and Sanitation on 24^th December, 2015. The establishment of the new Ministry has coincided with the moment when Nepal WASH sector is becoming vibrant day by day and Nepal is achieving and committed to put due efforts to achieve many national and international set goals and targets in water, sanitation and hygiene, intended towards betterments of peoples' living standards. Immediately after its establishment, the Ministry has initiated to draft new policies and legislations as well as revisions of existing sector policies and legislations in line with the recently promulgated Federal Constitution of Nepal.

As per the revised Work Division rules (BS 2072) of Government of Nepal, the scope of works vested in the Ministry is as follows:

1. Water supply and sanitation related policy, formulation of plans and programs, implementation, monitoring, regulation and evaluation;
2. Water supply, sanitation and sewerage;
3. Kathmandu Valley Water Supply Management Board;
4. Kathmandu Upatyaka Khanepani (Valley Water Supply) Ltd.;
5. Kathmandu Valley Water Supply & Sanitation Project Implementation Directorate;
6. Nepal Water Supply Corporation;
7. Melamchi Water Supply Development Board and Melamchi WS Project;
8. Water Supply Tariff Fixation Commission;
9. Administration of Sanitary Sub-Group/Civil Group of Nepal Engineering Services;