System of Regional Support Centre (RSC) was established for smooth management of Operation & Maintenance (O&M) Section in 1992. This was a recommendation made by the Institutional Development Programme funded by USAID. At the inception, only four RSCs were established for Western, Southern, Central and North Central Provinces. All Water Supply Schemes (WSS) except Kalutara WSS were under the Western RSC. With the expansion of water supply facilities in Western Province, it was decided to divide Western RSC in to 3 RSCs in 2008. Accordingly, RSC- Western Central (WC) was established to coordinate activities related to the central part of Western Province.
At present, RSC-WC geographically covers all areas in Colombo District except Dehiwala-Mount Lavinia and Moratuwa Municipal Council Areas. It consists of 03 Municipal Councils (Colombo, Sri Jayawardhanapura & Kaduwela), 05 Urban Councils, 03 Pradeshiya Sabhas falling within 10 Divisional Secretary areas.
RSC-WC has the largest number of connections (about 595,746 as at 2026/01) when compared to all other RSCs. It generates the highest income for NWSDB.
Manager Office wise Connections
Maharagama Region 245,120. (2026/01)
Kotte Region 199,361 (2026/01)
Manager Colombo city north 83,096 (2026/01)
Manager (Colombo South)- 68,169 (2026/01)
Contact Us
Additional General Manager
Deputy General Manager
Assistant General Manager (O&M)
Eng. V. U. Alawatta
Assistant General Manager (Development)
Eng. (Ms.) D. G. N. Kumari
NWSDB,75, Robert Gunawardana Mawatha, Battaramulla.
NWSDB, 1-2/1, White Park, Malaigakanda, Colombo 10
NWSDB, 1-2/1, 3rd Floor, White Park, Malaigakanda, Colombo 10
NWSDB, 57/33, Muthuwella Road, Colombo 15
Shantha Sebestiyan kanda,
Shanchi Arachi Wattha, Colombo 12
NWSDB, 73/7, Elwitigala Road, Colombo 08
NWSDB, 130, Lower St. Andrews Road, Mattakkuliya, Colombo 15
NWSDB, 130, Lower St. Andrews Road, Mattakkuliya, Colombo 15
NWSDB, 1-2/1, 3rd Floor, White Park, Malaigakanda, Colombo 10
NWSDB, 4/374, Perera Mawatha, Kaduwela
NWSDB, Vidyakara Mawatha, Maharagama
NWSDB, Kulasewana Mawatha, Pannipitiya
NWSDB, Courts Road, Homagama
NWSDB, Vidayala Mawatha, Avissawella
No. 16, Kottawa Road, Miriswatta, Piliyandala
NWSDB, Gorakapitiya Road, Pelanwatta
No.106/8, Hanwella Road, Galagedara, Padukka.
At any Cashier Point of the Water Board (Island Wide) – By cash or cheques (Working days- from 9:00 am to 3:00 pm)
(All cheques should be drawn in favour of the “National Water Supply & Drainage Board” and crossed “Account Payee only”. Also ensure that you enter your Account Number on the reverse of the Cheque. Send the bill intact for payments.)
Note: In the event of your cheque/s has been dishonoured Rs. 500/= per cheque will be debited to your account.
Cashier Points available in the RSC – Western Central Area
| Manager (Colombo City North) Office | NWSDB, No.3, White Park, Maligakanda, Colombo 10 |
| Pay & Go Machines | 1. Manager (Colombo City North) NWSDB, No.3, White Park, Maligakanda, Colombo 102. Zone Office (Maligawatta) NWSDB, E1,G4, Maligawatta Housing Scheme, Maligawatta Complex, Colombo 103. Area Engineer (Mattakkuliya) NWSDB, No.521/3, Aluth Mawatha, Colombo 15 |
| Area Engineer (Pamankada) | Nwsdb, No.42,5/1&5/1-1/1, Edmonton Rd, Colombo 06 |
| Area Engineer (Kotte) | NWS&DB, Sri Nagavihara Road, Pagoda, Nugegoda |
| Area Engineer (Maharagama) | NWS&DB, 138A, Dehiwala Road, Maharagama |
| Area Engineer (Kesbewa) | NWS&DB, 16, Kottawa Road, Miriswatta, Piliyandala. |
| Payment collection center | Nwsdb, F97, People’s Park Building, Colombo 11 |
| Manager (Colombo North) office | Nwsdb, No.o3,White Park, Maligakanda |
All OIC office in Western Central – Card payments only
| Boralesgamuwa Thrift & Credit Co-Operative Society Ltd | Dehiwala Road, Boralesgamuwa | Cash & Cheques |
| Divulpitiya Thrift & Credit Co-Operative Society Ltd | Sanasa Mandiraya, Divulpitiya, Boralesgamuwa | Cash & Cheques |
| Godigamuwa South Thrift & Credit Co-Operative Ltd. | Nilammahara, Maharagama | Cash & Cheques |
Manager’s Office – Kotte Area
1. AE Battaramulla – No75, Robert Gunawardana Mawatha, Battaramulla.
2. AE Kolonnawa – Base Hospital Rd, I.D.H.,Gothatuwa New Town
| Gamons Agency Post Office | Nugegoda | Cash & Cheques |
| M.P.C.S. | Kollonnawa | Cash |
| M.P.C.S. | Kaduwela | Cash |
| Sanasa Bank | Gangodawila | Cash & Cheques |
| Sanasa Bank | Nawala Koswatta | Cash & Cheques |
| M.P.C.S. | Baththaramulla | Cash |
| Sanasa Bank | Udahamulla | Cash |
| Pensioners Thrift & Credit Co-operative | Gangodawila | Cash & Cheques |
Banks
| Bank of Ceylon | Cash & Cheques, ATM & Internet |
| Peoples Bank | Cash & Cheques, ATM & Internet |
| HSBC Bank | ATM & Internet |
| City Bank | A/C No: 20091019 |
| Deutsche Bank | Cash & Cheques |
| Commercial Bank | Cash & Cheques |
| NDB | Cash & Cheques |
| Union Bank | Telephone & Internet Banking |
| Standard Chartered Bank | Telephone Banking |
| Seylan Bank | Only for Seylan Customers |
| Nation Trust Bank | Cash & Cheques |
| HNB | Cash & Cheques |
| Pan Asia Bank | Cash & Cheques |
| Sampath Bank | Sampathnet |
| NSB | Cash only |
Others
- Cargills Food City
- Abans
- SingerCe