Engineer (Civil / Electrical / Mechanical), Quantity Surveyor, Sociologist, Engineering Assistant (Civil / Electrical / Mechanical) – National Water Supply and Drainage Board March 11, 2021December 15, 2024 Applications.lkClosing Date – 2021-March-20Sinhala Advertisement Preview English Advertisement Preview Official Website Advertisement Preview Sinhala AdvertisementDownloadEnglish Advertisement 1DownloadEnglish Advertisement 2DownloadModel ApplicationDownloadSource – Silumina (2021.03.07) | Sunday Observer (2021.03.07)