Delhi Turns To Mechanised Drain-cleaning In Fresh Yamuna Push

Delhi’s Yamuna clean-up drive has entered a more equipment-heavy phase, with the government deploying two multitasking weed-harvester machines at the Najafgarh Drain, a major pollution channel feeding the river. According to reports on April 4, the machines were flagged off by Water and Irrigation and Flood Control Minister Parvesh Verma and are intended to remove floating garbage and dense aquatic vegetation in the same operation, with the aim of cutting pollution loads upstream before they enter the Yamuna and improving water flow ahead of the monsoon.

The move fits into a wider official framework that has been building over the past year. In July 2025, the Union Ministry of Jal Shakti said nine Yamuna-related sewerage projects in Delhi, creating 1,268 MLD of treatment capacity at a cost of ₹1,951 crore, had been completed under the Namami Gange Programme. The same Lok Sabha reply said ₹140 crore had been allocated jointly by NMCG and the Delhi government for Yamuna cleaning since January 2025, of which ₹108.31 crore had been utilised at that stage.

The urgency behind this renewed push is visible in official water-quality data. In that same Jal Shakti release, CPCB monitoring for 2025 showed Yamuna water quality in Delhi remaining severely stressed at downstream stretches. At Nizamuddin Bridge and Okhla Barrage, dissolved oxygen repeatedly fell to 0.3 mg/l or below-detection levels in several sampled months, while biochemical oxygen demand ranged far above the primary water-quality benchmark of less than 3 mg/l. Those readings underline why the focus has shifted from symbolic river-surface cleaning to tackling drains, sewage flows and choke points that drive pollution into the river system.

The latest machines are being used precisely in that source-control logic. Reports said the two harvesters, procured for about ₹2.9 crore, are powered by 112 HP engines and have a storage capacity of roughly 14 cubic metres. They are built for shallow-water work and can cut, collect and remove invasive aquatic growth such as water hyacinth along with floating trash through a conveyor-based continuous collection system. That makes them less like conventional garbage-removal boats and more like aquatic maintenance platforms designed to keep polluted drains moving while reducing the load of visible waste entering the Yamuna.

This mechanised intervention also sits alongside Delhi’s broader water-management preparations for summer 2026. Delhi Jal Board’s Summer Action Plan says the city aims to maintain about 1002 MGD of potable water production during the season, keep about 6290 tube-wells operational, and continue close monitoring of treatment plants and raw-water quality. While that document focuses on water supply rather than river restoration alone, it shows that Yamuna rejuvenation is now being handled within a larger system of urban water governance where treatment capacity, drain management, pumping infrastructure and emergency response increasingly intersect.

At the planning level, the Centre and Delhi government have already begun shaping a more integrated revival strategy. In July 2025, NMCG, NIUA and the Government of NCT of Delhi launched the preparation of an Urban River Management Plan for Delhi, bringing together 14 departments and agencies in a multi-stakeholder framework for Yamuna rejuvenation. That initiative signalled a shift toward a more comprehensive model in which engineering works, pollution control, land-use planning, ecological thinking and citizen-facing governance are meant to move together. The deployment of multitasking harvesters at Najafgarh Drain now appears to be one visible operational piece of that larger policy transition.

Taken together, the latest deployment suggests that Delhi’s Yamuna strategy is becoming more practical, more localised and more machine-led. The river’s condition still depends heavily on sewage treatment, drain interception, compliance and long-term urban planning. Yet the decision to place dual-purpose harvesters at one of the city’s most problematic drains shows a clear administrative bet: cleaner inlets, faster removal of weeds and floating waste, and steadier drainage can deliver visible gains while the slower structural work on river rejuvenation continues in parallel.

Reference:

https://www.ndtv.com/india-news/yamuna-clean-up-goes-high-tech-delhi-to-deploy-multitasking-harvesters-11312142
https://www.business-standard.com/india-news/delhi-government-to-deploy-weed-harvesters-to-reduce-pollution-in-yamuna-126040400856_1.html
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2150744&reg=3&lang=2
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2145295&reg=3&lang=2
https://delhijalboard.delhi.gov.in/sites/default/files/Jalboard/universal-tab/sap_2026.pdf