Delhi is taking a major leap towards solving its long-standing water crisis. The Delhi Jal Board (DJB) has approved the construction of three new water treatment plants (WTPs) across the capital. These plants are expected to add an additional 235 million gallons per day (MGD) to Delhi’s clean water supply, significantly improving access across various city zones.
This move is part of a broader infrastructure upgrade aimed at providing a reliable and uninterrupted water supply to residents, especially in underserved areas that currently rely on tankers or face frequent supply disruptions.
The three proposed WTPs will be located at:
These facilities will treat and supply clean drinking water to some of the most water-stressed localities in Delhi. The selection of these locations is strategic: all three are either rapidly urbanizing or already densely populated, and currently suffer from inconsistent water access.
Delhi’s water requirement is estimated at 1,250 MGD, but the city currently produces only 990–1,000 MGD through nine operational water treatment plants. This shortfall often results in scheduled cuts, low pressure, and supply via tankers in many parts of the city, particularly during summer and winter pollution peaks.
Additionally, water quality concerns have grown. During winter months, the Yamuna River experiences high ammonia levels, which has frequently forced DJB to reduce or halt treatment at plants like Wazirabad, Chandrawal, and Haiderpur. This compounds the supply challenge and disrupts service for lakhs of residents.
The new plants are designed not just to boost capacity, but also to diversify Delhi’s treatment and distribution network, making it more resilient to both quantity and quality disruptions.
To feed the upcoming WTPs, the Delhi government is investing in long-term water sourcing agreements through inter-state cooperation. Major developments include:
These projects are being executed in coordination with Himachal Pradesh, Uttarakhand, and other northern states under guidance from the central government. Delhi’s share of water from these Himalayan sources will be routed through pipelines and canals to the new WTPs once operational.
In a related move, the DJB has sanctioned a ₹300 crore pipeline project to ensure safe, continuous water supply to the Wazirabad plant. The plan involves laying an 11-km dedicated pipeline between Haiderpur WTP and the Wazirabad barrage, bypassing the highly polluted stretch of the Yamuna that often renders water untreatable.
This is expected to:
The combination of new plants and better sourcing infrastructure is expected to:
Additionally, this expansion supports the continuation of Delhi’s free water scheme, under which households receive up to 20,000 litres of water monthly at no cost. More supply will also allow greater flexibility to extend coverage and implement quality monitoring at the distribution level.
This initiative will benefit:
For the city as a whole, the project boosts water security, supports health outcomes, and promotes sustainable urban development.
The Delhi Jal Board has begun technical planning and fund allocation, while inter-state coordination for raw water sourcing is already underway. Environmental clearances, land preparation, and tendering are expected to follow. If executed on schedule, these three new WTPs could begin to change the water landscape of Delhi within a few years.
As Delhi’s population grows and climate unpredictability rises, this step marks a much-needed shift toward long-term planning and infrastructure investment in one of the most basic but essential public services—clean, safe water for all.
Q1. Why is Delhi building new water treatment plants?
Delhi is facing a water supply shortfall of over 250 MGD. The new WTPs are being built to increase the city’s water treatment capacity, reduce reliance on water tankers, and ensure consistent supply in underserved areas.
Q2. Where will the new WTPs be located?
The three new WTPs will be located at Iradat Nagar (Narela), Chhatarpur (South Delhi), and Najafgarh (Southwest Delhi), each with a capacity between 75–80 MGD.
Q3. How will these plants help improve water quality?
They will treat raw water from cleaner sources like the Giri River and bypass polluted stretches of the Yamuna River. This ensures better quality and fewer supply interruptions caused by high ammonia levels in the Yamuna.
Q4. What is the source of water for these plants?
Water will be sourced from interstate river systems, mainly through projects like the Giri River Scheme (Himachal Pradesh), Kishau Dam, and Lakhwar Vyasi Dam (Uttarakhand).
Q5. When will the plants be operational?
While exact timelines haven’t been announced, fund disbursal and planning are already underway. Environmental clearances, construction, and pipeline setup are next steps, aiming for completion in the next few years.
Q6. Will this affect the 20,000-litre free water scheme?
Yes, positively. By increasing supply, the government can continue or even expand the free water scheme without creating shortages or pressure on the system.
Q7. Who will benefit the most from this upgrade?
Residents in outer Delhi, slums, unauthorized colonies, and areas currently dependent on tanker supply will benefit most, along with institutions and small businesses.
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