MAHAKUMBH NAGAR, Feb. 20 -- To ensure the smooth progress of Mahakumbh-2025, 10 sewage treatment plants (STPs) have been activated under the Namami Gange Mission in the city to preserve the purity and sanctity of the Ganga, while work is progressing rapidly on three new STPs in Salori, Rasulabad and Naini, said officials on Wednesday....