Water Pollution — Prelims Strategy

Prelims Strategy

For Prelims preparation, focus on memorizing specific facts and figures: BOD/COD standards (3 mg/L for bathing, 6 mg/L for irrigation), key legislation dates (Water Act 1974, EPA 1986), constitutional articles (21, 48A, 51A(g)), and scheme allocations (Namami Gange ₹20,000 crores).

Create fact sheets for major polluted rivers with their pollution sources and cleaning initiatives. Practice elimination techniques by understanding common traps: confusing BOD with COD, mixing up constitutional articles, and incorrectly attributing scheme features.

Focus on current affairs integration - recent NGT orders, CPCB reports, and international agreements. Use mnemonics for remembering pollution parameters and legal provisions. Pay special attention to cause-effect relationships and comparative aspects between different pollution types.

Regular practice of previous year questions reveals UPSC's preference for application-based questions over direct factual recall.

Also build Paper II skills

Regional comparisons and process chains train the same coherence and inference habits CSAT passages demand. CSAT hub.

• Data interpretation
• Estimation techniques
• Logical deductions