Outsourcing Contract Labourers for Operation and Maintenance of Package - I (Head works, Seepuliyur common sump to Thalainayar common sump) in CWSS to 295 QAH & 315 WSH in Sirkali, Kollidam, Mayiladuthurai and Sembanarkoil Unions in Nagapattinam District for the period from 01.08.2021 to 31.03.2022 for the year 2021-22