Chandigarh, April 18 -- The UT administration has informed the National Green Tribunal (NGT) that all sewage treatment plants (STPs) in the city have been upgraded to meet the latest environmental norms, with a push underway to scale up the reuse of treated wastewater across public and institutional spaces. The target is to nearly double the utilisation of treated wastewater by June 30, it stated. In its latest compliance report filed before the tribunal, the administration mentioned that the upgrades have been carried out in line with NGT directions issued on April 30, 2019. According to the report, all STPs are now producing tertiary-treated water, with disinfection carried out through gas chlorination for non-potable reuse. P2...