India, May 23 -- Untreated sewage continues to flow from Noida into the Yamuna river system despite repeated court directives, according to a note submitted to the Supreme Court by amicus curiae K Parameshwar.

The unchecked discharge into the Kondli-Noida drain is driven by incomplete drain trapping and malfunctioning society-level sewage treatment plants (STPs), the document stated.

The note is part of ongoing hearings in an appeal filed by the New Okhla Industrial Development Authority (Noida authority) and the Delhi Jal Board. The agencies are challenging a 2022 National Green Tribunal (NGT) order that imposed interim environmental compensation penalty - Rs.100 crore on Noida and Rs.50 crore on Delhi Jal Board - for sewage discharge....