Colombo, September 17, 2025 – The National Water Supply and Drainage Board (NWSDB) announced today that the previously scheduled nine-hour water cut for several areas in Colombo on Thursday, September 18, has been cancelled.
Earlier, the NWSDB had notified residents that the water supply from the Ambatale Water Treatment Plant would be suspended due to a planned electricity outage at the main Thulhiriya pumping station, which provides water to the facility.
However, in a revised notice, the Water Board confirmed that the supply will continue uninterrupted and that the planned suspension is no longer necessary.
Areas Where Supply Will Not Be Interrupted
- Colombo 01 to 15
- Battaramulla, Pelawatte, Hokandara, Koswatta, Thalawathugoda, Kotte, Rajagiriya, Mirihana, Madivela, Nugegoda, Nawala, Kolonnawa, IDH, Kotikawatta, Angoda, Wellampitiya, Orugodawatta, Mulleriyawa, Maharagama, Boralesgamuwa, Dehiwala, Ratmalana, and Moratuwa
The NWSDB advised residents that the hotline 1939 remains available for any further information or clarifications.




