Deduru Oya Water Supply Project Vacancies Ministry of City Planning and Water Supply Vacancies National Water Supply and Drainage Board Job Vacancies November 28, 2017Applications.lk Chief Engineer (Civil / M&E), Engineer (Civil / Mechanical / Electrical), Quantity Surveyor, Engineering Assistant (Civil / Mechanical / Electrical), Project Secretary – National Water Supply and Drainage Board 2017 Closing Date – 2017-December-08