Description: Kolkata Metropolitan Development Authority invites two-part e-tenders for operation and maintenance of the existing chlorination plant at Salt Lake UGR, including water sample collection and residual chlorine testing for one year. Contact Details: Executive Engineer (Civil), EM Division, Water & Sanitation Sector, KMDA Unnayan Bhavan, Salt Lake, Kolkata – 700091 Websites: https://kmda.wb.gov.in | https://wbtenders.gov.in