Central Workshop is the main workshop to the National Water Supply & Drainage Board and running under Deputy General Manager (Mechanical & Electrical Service). This plays a leading role in the O&M (Operational & Maintenance) Sector, giving assistance to the maintenance of Treatment plants and Drainage Systems.

Sections under Central Workshop
  • Vehicle Section
  • Fabrication Section
  • Pump Section & Machine Section
  • Electrical Section
  • Electronic Section
  • Water Meter Testing
Main work carrying out by the Central Workshop
  • Running repair and major repairs of Board vehicles.
  • Vehicle periodic services
  • Engine Overhauling
  • Fabrication of package treatment plants
  • Treatment plant repair work
  • Other Fabrication work
  • Repair to all kinds of Pumps, Valves, Compressors, Generators etc.
  • Electrical repair works, including motor rewinding.
  • Electronic equipment repair work.
  • Testing & issuing test reports for Ferrules, Valves, etc.
  • Drivers, Pump Operators competence tests.
  • Installations of plant & equipment.
  • Site breakdown repair.
  • Quality inspections.
  • Water meter testing
  • Water meter repairing


We are a highly skilled crew in Mechanical & Electrical service looking for the opportunity to assist NWSDB in order to achieve a targeted safe drinking water supply in Sri Lanka.

Chief Engineer,

Central Workshop,


Maligawa Road,


T.P- 0112636327

Fax- 0112624738

Contact Details of Staff Members 
                Section            Name        Designation    Telephone      Fax
 Office  (Central Workshop)   Mr.A.L.S.Sriwardhana  Chief Engineer  0112636327 0112624738 
Mrs. Koshila  Accountant  0112636327
Mrs. Shriyani  Staff Assistant  0112636327
Mrs. Dulani  Supply Assistant  0112636327
 Pump Section     Mr.T.B.P. Priyadharshana Snr. Mechanical Engineer  0112636327
 Mr.K.G.L.P.Kumara  E.A.(Mechanical)  0112636327
 Mr.G.J.D.Alwis  E.A.(Mechanical)  0112636327
 Electrical Section    Mr.Nuwan Dayananda  Electrical Engineer  0112636327
 Mrs.N.Hewavitharana  E.A.(Electrical)  0112636327
 Mr.Indika  Store Keeper  0112636327
 Fabrication Section   Mr.T.B.P. Priyadharshana  Snr. Mechanical Engineer  0112636327
 Mr.Suwaris  E.A.(Mechanical)  0112636327
 Vehicle Section      Mr.Thusara Sadakelum  Mechanical Engineer  0112636327
 Mr.H.A.J.Bandara  E.A.(Mechanical)  0112636327
Mr.K.P.C.De Silva   E.A.(Mechanical)  0112636327
Electronics Section Mr. C.M. Karunarathna Snr.Electronics Engineer 0112636327
Mr.N.Sanjeewa E.A.(Electronic) 0112636327
Meter repair Section Mr. Jayaruwan Mechanical Engineer 0112636327
Mr.Namal  Bandara E.A.(Mechanical) 0112636327