Why is the world today confronted with a crisis of availability of and access to freshwater resources?
Approach · directive: “why”
What it asks · Explain both sides of the crisis, physical availability of freshwater and unequal access to it, and why each is worsening.
The question has 2 parts — answer each
- Explain why the physical availability of freshwater is shrinking relative to need
- Explain why access to freshwater is unequal, and how the two sides of the crisis reinforce each other
Open with · Though water covers most of the planet, only a small fraction is fresh and readily usable, and that fraction is unevenly spread and increasingly stressed.
Cover
- Limited, uneven supply: freshwater is a tiny share of all water, and rainfall and rivers vary sharply across regions and seasons.
- Rising demand: population growth, urbanisation, irrigated agriculture and industry increase withdrawals, with irrigation taking the largest share.
- Over-extraction and pollution: aquifers are drawn down faster than they recharge, while sewage, effluents and agrochemicals make available water unusable.
- Climate change: melting glaciers, altered rainfall, droughts and floods disturb supply, and sea-level rise pushes salinity into coastal aquifers.
- Access gaps: poor infrastructure, poverty, weak pricing and governance leave many without safe water and sanitation, with women and girls bearing the collection burden.
- Transboundary tension: shared rivers and aquifers without firm sharing agreements add political risk.
Close with · The way out lies in demand management, reuse, recharge, fair pricing and cooperative river-basin governance that treats water as a shared, finite resource.
Add value (verified)
- WHO/UNICEF JMP 2023 update: in 2022, 27% of the world's population, 2.2 billion people, lacked safely managed drinking water (water at home, available when needed and free from contamination). WASH monitoring — Water, Sanitation and Health, WHO ↗“The 2023 update estimated that in 2022, 27% of the global population (2.2 billion people) lacked “safely managed drinking water”– meaning water at home, available, and safe.”
Question: UPSC's CS (Main) 2023, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 223 words (UPSC limit 150) · Minimalist IAS
Freshwater is a small, unevenly spread fraction of the planet's water; the WHO/UNICEF Joint Monitoring Programme estimated that 2.2 billion people still lacked safely managed drinking water in 2022. The crisis is one of quantity and of distribution.
Why availability is shrinking
- Fixed, uneven supply: usable freshwater is a tiny share of all water, and rain and river flows vary sharply by region and season.
- Rising demand: population growth, cities, industry and above all irrigated farming, the largest user, keep raising withdrawals.
- Over-extraction: aquifers are pumped faster than they recharge, drying wells and rivers; India is the world's largest extractor of groundwater.
- Pollution: untreated sewage, industrial effluents and farm chemicals make available water unusable.
- Climate change: melting glaciers, shifting rainfall, longer droughts and heavier floods disturb supply, and sea-level rise pushes salt into coastal aquifers.
Why access is unequal
- Poor infrastructure and poverty leave the poor dependent on distant or unsafe sources, with women and girls bearing the burden of collection.
- Weak pricing and governance: under-priced water is over-used by the well-off and lost in leaking systems, while the poor pay more to private tankers.
- Transboundary rivers and aquifers shared without firm agreements turn scarcity into political tension.
The way out is to manage demand, recycle and recharge, price water fairly and govern shared basins cooperatively, treating freshwater as a finite common resource.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.