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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.

Contact Details

Central Workshop
National Water Supply & Drainage Board
Maligawa Road, Ratmalana
Tel: 011-2636327
Email: ceworkshop@waterboard.lk
Chief Engineer
Mr. A.L.S. Sriwardhana
Tel: 011-2636327
Email: sri03@yahoo.com