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Delhi-NCR Hindustan Times India Politics • Oct 29, 2026

DJB Considers Tapping Contaminated Groundwater to Bridge Delhi's Water Supply Gap Amid Rising TDS Levels

💡 Key Takeaways

•Delhi Jal Board is evaluating plans to tap contaminated groundwater to address severe water supply deficits.
•Total Dissolved Solids in targeted zones range between 1,500 and 3,000 mg/l, exceeding 10,000 mg/l in specific pockets.
•Advanced treatment infrastructure is required before distribution to ensure public health safety compliance.

NEW DELHI [NCRBuzz Wire] — ### NEW DELHI [NCRBuzz Wire] — The Delhi Jal Board is actively evaluating proposals to tap into contaminated groundwater reserves to bridge the widening water supply gap across the National Capital Region. **Municipal authorities are confronting acute deficits in potable water availability, driving the administration to explore non-traditional extraction sites despite severe chemical and mineral contamination indicators.** The Total Dissolved Solids concentration in these targeted areas generally ranges between 1,500 and 3,000 milligrams per litre, and may exceed 10,000 milligrams per litre in certain isolated pockets.

### ### Technical Challenges and Infrastructure Constraints

**Extracting and treating high-TDS groundwater requires advanced reverse osmosis infrastructure and substantial energy inputs from municipal utilities.** The governing bodies, including agencies coordinating with the Commission for Air Quality Management and urban transit planners managing route diversions near treatment plants, must factor in the logistical challenges of transporting treated output. Commuter impact remains a secondary concern as pipeline laying and extraction station installations may temporarily disrupt local traffic and station connectivity across affected municipal zones.

### ### Public Health and Regulatory Oversight

**Public health experts and environmental regulators have raised significant concerns regarding the long-term viability and safety of consuming treated high-TDS water without comprehensive infrastructural upgrades.** Municipal authorities must ensure stringent compliance with environmental norms supervised by bodies like the Central Pollution Control Board before distributing the extracted groundwater to residential networks. Citizens are encouraged to stay informed via municipal portals for real-time updates on water supply schedules and tanker deployment locations.

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🏛️ Background Context

Delhi has historically depended on raw water supplies sourced from neighboring states via Yamuna and Ganga canals, making it vulnerable to inter-state supply disputes and seasonal deficits.

💡 Citizen & Commuter Quick Explainer (FAQ)

Q1: Why is the Delhi Jal Board considering contaminated groundwater?

The DJB is evaluating this option to bridge a persistent and severe raw water supply deficit across the capital.

Q2: What is the TDS level in the targeted groundwater areas?

The Total Dissolved Solids concentration typically ranges from 1,500 to 3,000 mg/l, and can exceed 10,000 mg/l in certain locations.

Q3: What safety measures are planned for this water?

Advanced treatment infrastructure, including reverse osmosis and specialized filtration, will be necessary to treat the high-TDS water before distribution.

Verified Wires: Hindustan Times India Politics Original Wire Dispatch ↗

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