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News 9 of 14

Delhi Water Crisis: Ageing Pipes, 40% Non-Revenue Water Loss, and IoT-SCADA Solutions Highlighted

Target:UPSC GS-IIMPSCPrelims MediumMains HighStatic GK Link
14 Jun 2026
~2 min
Source: Indian Express
Key Data:Nearly 40%5-10%
Bodies:TERIMinistry of Housing and Urban AffairsWHO
Practice MCQs from today's news ▸
What This Article Covers

1.Delhi's water contamination is a systemic issue caused by ageing infrastructure, low pressure, and leaks, not isolated incidents.

2.Nearly 40% of supplied water is lost as non-revenue water, a key indicator of system inefficiency.

3.The solution lies in moving from complaint-based detection to proactive prevention using IoT sensors and SCADA systems for real-time monitoring.

The Big Picture
Prelims · MediumMains · High

Delhi's recurring water contamination stems from a failing distribution system. A combination of ageing pipes, low pressure, and proximity to sewer lines allows pollutants to enter drinking water. Experts advocate a shift from reactive fixes to proactive prevention using real-time monitoring and planned infrastructure renewal.

Exam Lens

Quick Exam Facts From News

Non-Revenue Water Loss in DelhiNearly 40%
Int'l Benchmark for Water Loss5-10%
Key Trigger for ContaminationLow Pressure & Flow Reversal

1-Minute Revision

  • Non-Revenue Water Loss in Delhi: Nearly 40%
  • Int'l Benchmark for Water Loss: 5-10%
  • Target this Data: Nearly 40% of Delhi's water is lost as Non-Revenue Water (NRW).
  • Target this Nodal Body: Ministry of Housing and Urban Affairs (MoHUA) - its water-supply manuals are referenced.
  • Target this Technical Solution: SCADA (Supervisory Control and Data Acquisition) systems for real-time water network monitoring.

Mastered this topic? Test your knowledge with a full MCQ quiz.

Practice exam-style questions, track your score, and strengthen your recall.

1Static LinkageEasy

The water-supply manuals referenced in the context of contamination risks are issued by which Union Ministry?

2Statement-basedHard

Consider the following statements regarding water contamination in Delhi as per the article:

1. Contamination can occur when a pollution source is close to a drinking water line and there is a pathway for entry like a corroded pipe.

2. High water pressure is identified as a primary hydraulic trigger that allows contaminated water to be sucked into the distribution network.

3. Experts suggest that nearly 40% of water loss in Delhi's system points to deeper inefficiencies compared to international benchmarks.

Which of the statements given above is/are correct?

3Data-centricMedium

According to the water governance expert cited in the article, what is the approximate percentage of supplied water lost as non-revenue water in Delhi?

4Application/ImpactMedium

What is the core shift in approach recommended by experts to address Delhi's water contamination problem?

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