To address the severe pollution in the Yamuna river, particularly along its critical 22-kilometre urban stretch in Delhi, the Delhi Jal Board (DJB) has launched a comprehensive initiative to identify and curb wastewater discharge. The primary source of this pollution is the network of drains originating from both Delhi and neighboring states that empty into the river.

Survey and Flow Meter Installation To effectively stop wastewater from entering the river, the DJB has decided to study 75 drains that discharge into the Yamuna. A tender has already been issued for this project. Key measures include:

Flow Meters: Preparations are underway to install flow meters on these drains to determine the exact daily volume of wastewater flowing into the river.

Key Drains: The survey will cover major pollution sources, including the Najafgarh and Shahdara drains, which contribute heavily to the river's contamination.

Focus On Inter-State Pollution

A significant portion of the pollution stems from drains entering Delhi from neighboring states. These drains carry both urban waste and industrial effluent. The study will specifically examine 13 drains entering from Haryana, including:

- The Mangeshpur drain

- The Bupania Chudania drain

- Drain No. 6 (near the Narela border)

- The Alipur Link drain

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Future Remedial Actions

Officials stated that the findings from the study and flow meter data will guide the next steps. Based on the report, decisions will be made to construct Sewage Treatment Plants (STPs) and Decentralised Sewage Treatment Plants (DSTPs) as required. Progress is already visible, as the process to install 27 DSTPs on smaller drains flowing into the Najafgarh drain has already begun.

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