Engineer (Civil), Engineering Assistant (Civil) – National Water Supply and Drainage Board July 7, 2020December 15, 2024 Applications.lkClosing Date – 2020-July-20Sinhala AdvertisementDownloadEnglish AdvertisementDownloadWeb English AdvertisementDownloadModel ApplicationDownloadSource – Silumina (2020.07.05) | Sunday Observer (2020.07.05)