UPSC Mains 2024 GS3 Q7: model answer
Industrial pollution of river water is a significant environmental issue in India. Discuss the various mitigation measures to deal with this problem and also the government’s initiatives in this regard.
What the question wants
Mitigation measures and government action against industrial river pollution.
How to structure it
Intro: scale (CPCB polluted stretches). Body: (1) technical measures (ZLD, CETPs); (2) regulatory measures; (3) government initiatives (Namami Gange, NRCP, online monitoring); (4) gaps. Conclusion: polluter pays and strict enforcement.
- 1(1) technical measures (ZLD, CETPs)
- 2(2) regulatory measures
- 3(3) government initiatives (Namami Gange, NRCP, online monitoring)
- 4(4) gaps
Model answer
CPCB identified 311 polluted river stretches (2022). Tanneries, distilleries, pulp and paper, sugar and textile units are major sources.
Mitigation measures
- Effluent treatment plants in each unit; Common Effluent Treatment Plants for small clusters.
- Zero Liquid Discharge for highly polluting units.
- Cleaner production: chrome recovery in tanneries, water recycling.
- Polluter pays and environmental compensation.
Government initiatives
- Water (Prevention and Control of Pollution) Act, 1974; consent to establish and operate.
- Namami Gange (2014): industrial pollution inspections, closure of defaulting units.
- Online Continuous Effluent Monitoring Systems for 17 categories of highly polluting industries.
- National River Conservation Plan for other rivers; NGT orders.
Weak State boards and poor CETP performance remain gaps. Real-time data and strict penalties can clean India's rivers.
Keywords, cases and data to drop in
311 stretches CETP ZLD OCEMS Namami Gange
Where most answers lose marks
- Mixing in sewage-only measures.
Fresh examples from current affairs
CAQM orders PTZ cameras at all polluting industries in NCR by 30 November 2026
The Commission for Air Quality Management in NCR and Adjoining Areas (CAQM) has extended its order on Pan-Tilt-Zoom (PTZ) cameras to every category of industry covered by its Statutory Direction No. 98, it said on 16 October 2026. Cameras must watch fuel-feeding points, stacks and emission-monitoring ports, and must stream live to CPCB and State pollution boards. The deadline is 30 November 2026.
UPSC angle: Prelims: CAQM, OCEMS, CPCB categories. · Mains GS-III: air pollution governance.
16 Oct 2026
CAQM reviews stubble-burning hotspots in Amritsar and Tarn Taran
A CAQM team visited Amritsar and Tarn Taran, two Punjab hotspots of paddy stubble burning, on 9-10 October 2026 and reviewed crop residue machinery, baler supply chains and control rooms. CAQM flying squads are deployed in 18 Punjab districts from 1 October to 30 November 2026 to check burning during harvest.
UPSC angle: Prelims: CAQM, in-situ/ex-situ. · Mains GS-III: air pollution, crop residue.
10 Oct 2026
CAQM flying squads find 17 road-dust violations along Delhi’s Ring Road
On 3 October 2026 four CAQM flying squads inspected 25 stretches, about 35 km, of Delhi's Inner and Outer Ring Road managed by PWD. They found 17 violations of heavy visible road dust and construction and demolition waste. CAQM directed agencies to clean roads regularly to stop traffic from lifting dust back into the air.
UPSC angle: Prelims: CAQM, pollution sources. · Mains GS-III: urban air pollution.
4 Oct 2026
Mumbai Port’s Jawahar Dweep declared India’s first plastic-free oil terminal
On 2 October 2026 the Mumbai Port Authority declared its Jawahar Dweep Marine Oil Terminal plastic-free, making it India's first plastic-free oil terminal. The Union Ports Minister marked it at the port's Swachhata Abhiyan on Gandhi Jayanti, honoured sanitation workers and dedicated the port's Oil Spill Response facilities to the nation.
UPSC angle: Mains: Green port initiatives.
2 Oct 2026Learn the concept
Question text as printed in the official UPSC question paper: https://www.upsc.gov.in/sites/default/files/QP_CSM_2024_GenStud_III_03102024.pdf The model answer is original Battle IAS work; use it to learn structure, not to memorise.