How Secure Are India’s Freshwater Resources?

Why in News?

The Central Water Commission (CWC) reported that live storage in 178 major reservoirs stood at 70% of total capacity as of September 24, 2026, below the 10year average of 76.62% and the corresponding 2025 level of 79%.

India’s Water Security: The Core Concern

India has significant freshwater resources but faces growing water stress due to:

• High population pressure
• Uneven spatial distribution of water
• Monsoon dependence
• Groundwater over extraction
• Rapid urbanisation
• Climate variability
• Inefficient water use

India has about 18% of the world''s population but only around 4% of global freshwater resources.

Water security is not merely about how much water exists, but whether adequate water is available, accessible, safe and sustainably managed.

Major Sources of India’s Freshwater

Monsoon

• Southwest monsoon contributes over 70% of India''s annual rainfall.
• It replenishes rivers, reservoirs, lakes and groundwater.
• Hence, India''s water security is closely linked to monsoon performance.

Himalayan Rivers

The Indian Himalayan Region is the source of major river systems such as:

• Indus – Ganga – Brahmaputra
• Glaciers, snowmelt, rainfall and springs contribute to their flows.

Peninsular Rivers

• Major systems include: Godavari, Krishna, Mahanadi, Narmada, Tapi, Cauvery and Pennar.
• They are comparatively more dependent on rainfall and monsoon variability.

Groundwater

• Groundwater is crucial for irrigation, drinking water and industry.

According to the CGWB 2024 assessment:

• Annual groundwater recharge: 446.90 BCM
• Extraction: 60.47% of annual extractable resources

Is India Water Stressed?

The Falken mark Index provides a useful measure:

India''s percapita water availability has declined from: 5,177 m³ (1951) → 1,486 m³ (2021) → 1,367 m³ projected (2031)

Thus, India''s national percapita availability is already below the 1,700 m³ waterstress threshold.

Major Drivers of Water Stress

Groundwater Depletion

• 11.13% of groundwater assessment units are overexploited.
• Another 13.59% are critical or semicritical.

Agricultural Demand

• Agriculture accounts for the largest share of freshwater use, while inefficient irrigation and waterintensive cropping patterns increase pressure on aquifers.

Urbanisation

• Unplanned urban growth leads to: Encroachment of water bodies → reduced recharge → increased runoff → urban water shortages

Climate Variability

• Climate change can produce both extreme rainfall and prolonged dry spells, making water availability more uncertain.

Ecosystem Degradation

• Loss of wetlands, lakes, tanks, springs and floodplains reduces natural water storage and groundwater recharge.

Why Reservoir Levels Matter

• Low reservoir storage can affect: Drinking water → Irrigation → Hydropower → Industry → Ecosystems

The 2026 situation also highlights the distinction between different types of drought:

• Meteorological drought: Rainfall deficiency.
• Agricultural drought: Inadequate soil moisture for crops.
• Hydrological drought: Low river, reservoir and groundwater levels.
• Socioeconomic drought: Water shortage affecting livelihoods and economic activity.

Global Water Security

• Only about 2.5% of Earth''s water is freshwater, and most of it is locked in glaciers, ice caps or stored underground. Only a very small fraction is readily accessible as surface water.
• The UNUINWEH''s 2026 report on global water bankruptcy highlights declining water storage, groundwater depletion and increasing water stress across several regions.

Government Initiatives

• Jal Jeevan Mission – Rural household tapwater supply.
• Atal Bhujal Yojana – Communitybased groundwater management.
• PMKSY – Per Drop More Crop – Improving irrigation efficiency.
• National Water Mission – Water conservation and efficient management.
• AMRUT – Urban water and wastewater infrastructure.
• Catch the Rain – Rainwater harvesting and groundwater recharge.

Way Forward

• Demand Management : Shift from simply creating additional water supply towards efficient and sustainable water use.
• Water Efficient Agriculture: Promote microirrigation, crop diversification and regionspecific cropping patterns.
• Aquifer Management : Map and monitor aquifers while strengthening groundwater budgeting and recharge.
• Urban Water Security : Adopt rainwater harvesting, wastewater treatment and reuse, leakage reduction and restoration of urban water bodies.
• RiverBasin Approach : Plan water resources at the riverbasin and aquifer level, rather than treating administrative boundaries as hydrological boundaries.