New Delhi, April 22 -- The Delhi Jal Board (DJB) has decided to revive its 10-year-old plan to decentralise a 120mgd (million gallons a day) plant into two plants of 80mgd and 40mgd at the Wazirabad water treatment plant, and undertake key upgrade and maintenance works, senior government officials said. A tender has also been floated for the same. The work will involve the construction of new clear water reservoirs and pumping stations, upgrade of underground service reservoirs (UGRs), booster stations, primary and secondary distribution mains, tertiary pipelines, customer connections and bulk and consumption meters. An official, who did not wish to be named, said, "A central SCADA (Supervisory Control and Data Acquisition) system will be i...