National Water Supply and Drainage Board

The National Water Supply Drainage Board (NWSDB), which presently functions under the Ministry of Water Supply & Drainage is the principal authority providing safe drinking water and facilitating the provision of sanitation in Sri Lanka.

The NWSDB is presently operating 338 Water Supply Schemes in the island which covers more than 50% of the total population with pipe borne water supply. Currently the organization serves 2.8 million connections with expected expansion in the years to come. The NWSDB is also in charge of the sewerage system in Colombo and suburbs, Hantane, Koggala, Hikkaduwa, Kataragama and in few housing schemes.