Nepal Water Supply Corporation (NWSC) is a public utility organization; an autonomous government body formed under Nepal Water Supply Corporation Act 2046 BS. NWSC is under the ministry of Urban Development. NWSC provides its services to the 20 cities within the country. Out of the 3 were sub metropolitan city, 16 were municipality and remaining 1 is VDC. Following tables shows the service area of NWSC.