Water Availability in India

India is facing a serious water crisis despite receiving nearly 4,000 Billion Cubic Metres (BCM) of annual rainfall. The crisis reflects a major paradox: while the country receives substantial rainfall every year, inadequate storage facilities, excessive groundwater extraction, uneven distribution of water resources, and fragmented governance have severely limited the availability of usable water. This situation poses a significant challenge to achieving Sustainable Development Goal 6 (Clean Water and Sanitation).

Key Highlights

Population–Resource Paradox

India supports nearly 18% of the world’s population, but possesses only around 4% of global freshwater resources. At present, nearly 60 crore people in India experience high to extreme water stress. Rapid population growth, urbanisation, industrial expansion, and rising agricultural demand have intensified the pressure on available water resources.

The decline in per capita water availability highlights the severity of the crisis. In 1947, per capita water availability was more than 5,000 cubic metres, but today it has fallen to nearly 1,400 cubic metres. If this level falls below 1,000 cubic metres, India will officially be categorised as a “water-scarce nation.”

Precipitation and Limited Utilisable Water

India receives abundant rainfall annually, estimated at nearly 4,000 BCM, mainly through the South-West Monsoon. However, only around 1,123 BCM of this water is considered “utilisable.”

The gap between total rainfall and utilisable water exists because of several structural and geographical limitations. A major factor is the highly seasonal nature of the monsoon, as nearly 70% of rainfall occurs within just 3–4 months. As a result, large quantities of rainwater flow into rivers and eventually into the sea without being effectively stored.

Other important reasons include:

• Inadequate storage infrastructure

• Uneven regional distribution of rainfall

• Geological and topographical barriers

Current Reservoir and Storage Status

The Central Water Commission (CWC) monitors 166 reservoirs across 20 river basins in India. According to its latest assessment, water levels in these reservoirs have declined sharply.

As of April 2026, reservoir storage levels had fallen to below 45% of total capacity, indicating growing stress on water availability even before the arrival of the monsoon.

The decline has been most severe in Southern India, where several reservoirs have reached critically low levels due to deficient rainfall and high water demand. In contrast, many North-Eastern states, especially Arunachal Pradesh, continue to remain relatively water-abundant because of heavy rainfall and continuous Himalayan river runoff.

Invisible Groundwater Crisis

India is the largest user of groundwater in the world, accounting for nearly 25% of global groundwater extraction. Groundwater plays a vital role in agriculture, drinking water supply, and rural livelihoods.

However, excessive and uncontrolled extraction has created a serious groundwater depletion crisis. According to recent assessments by the Central Ground Water Board (CGWB), nearly 14–17% of groundwater assessment units are classified as “over-exploited,” meaning that groundwater extraction exceeds natural recharge.

States such as Punjab, Haryana, and Rajasthan are among the worst affected due to:

• Intensive irrigation practices,

• Dependence on tube wells,

• Cultivation of water-intensive crops.

Declining groundwater levels are also causing:

• Rising energy costs for pumping water,

• Deterioration in water quality,

• Increased risks of land subsidence.

Sector-Wise Water Consumption

Agriculture as the Largest Consumer

Agriculture is the largest consumer of freshwater in India, accounting for nearly 85–90% of total water usage. A significant share of this water is used for cultivating highly water-intensive crops such as:

• Rice

• Sugarcane

Traditional irrigation methods, especially flood irrigation, further contribute to large-scale wastage of water and low water-use efficiency.

Industrial and Domestic Consumption

The industrial and domestic sectors together consume around 10–15% of India’s freshwater resources. However, industrial demand is increasing rapidly due to:

• Urbanisation,

• Economic growth,

• Expansion of manufacturing activities.

India as a Water-Stressed Nation

The World Bank has identified India as one of the most water-stressed countries in the world. Many parts of India are likely to face severe water scarcity by 2040 due to rising water demand, declining water availability, and irregular rainfall patterns caused by climate change.

According to the Annual Ground Water Quality Report 2024 released by the Central Ground Water Board (CGWB), the average stage of groundwater extraction in India stands at 60.4%.

Water Reservoirs

Water reservoirs are natural or artificial storage spaces where water is collected and stored for future use. They help maintain a steady supply of water during dry seasons and periods of low rainfall.

Water reservoirs include:

• Rivers

• Lakes

• Glaciers

• Groundwater aquifers

• Dam reservoirs

• Tanks

• Canals

These reservoirs are essential for ensuring long-term water security.

Importance of Water Reservoirs

Water reservoirs play a crucial role in supporting:

• Agriculture and irrigation

• Drinking water supply

• Industrial activities

• Hydroelectric power generation

• Flood control

• Ecological balance

Reasons for Decline in Reservoir Capacity

Siltation and Sediment Deposition

One of the major causes of declining reservoir capacity is siltation, which refers to the accumulation of silt, sand, and debris in reservoirs over time. This reduces the amount of water that reservoirs can store effectively.

Catchment Area Degradation

Activities such as deforestation, mining, and overgrazing increase soil erosion in catchment areas. The eroded soil is carried into reservoirs through rivers and streams, increasing sediment deposition and reducing storage capacity.

Encroachment and Urbanisation

Rapid urbanisation and illegal encroachment around reservoir areas and feeder channels reduce the effective storage area of reservoirs. Construction activities often obstruct natural water flow and limit groundwater recharge.

Eutrophication and Growth of Aquatic Weeds

Pollution caused by sewage discharge and agricultural runoff increases nutrient levels in water bodies. This leads to eutrophication, resulting in excessive growth of algae and aquatic weeds. These weeds occupy storage space and reduce water quality.

Climate Variability

Increasing climate variability has resulted in erratic rainfall patterns, prolonged droughts, and extreme weather events. Reduced rainfall lowers reservoir inflow, while sudden heavy rains increase erosion and sedimentation, further decreasing reservoir efficiency.

Major Causes of Water Scarcity in India

Rapid Urbanisation and Industrialisation

Rapid urbanisation and industrialisation have significantly increased the demand for water in cities and industrial regions. At the same time, untreated sewage, industrial waste, and chemical pollutants are continuously discharged into rivers, lakes, and groundwater sources. This pollution has made many water bodies unsafe for drinking, irrigation, and domestic use.

Inefficient Agricultural Practices

Agriculture remains the largest consumer of water in India. Traditional irrigation methods such as flood irrigation result in significant wastage of water. In addition, the cultivation of highly water-intensive crops like rice, wheat, and sugarcane in water-scarce regions has placed immense pressure on groundwater reserves.

Excessive Groundwater Extraction

India is heavily dependent on groundwater for irrigation, drinking water supply, and industrial activities. The widespread use of tube wells and borewells has led to rapid depletion of aquifers in several parts of the country.

Impact of Climate Change

Climate change has further aggravated water scarcity by causing irregular rainfall patterns, prolonged droughts, and extreme weather events. The monsoon has become increasingly unpredictable, affecting the recharge of rivers, lakes, and groundwater aquifers.

Poor Water Management and Inadequate Infrastructure

Inefficient water management practices and inadequate infrastructure have significantly worsened the water crisis. Large quantities of water are lost due to leakages in supply systems, poor storage facilities, and inefficient distribution networks.

Water Governance in India

Constitutional Provisions Related to Water

Under Entry 17 of the State List in the Seventh Schedule of the Constitution, water is primarily a State subject. This means that states are responsible for water supply, irrigation, drainage, and water storage within their territories.

However, under Entry 56 of the Union List, the Union Government has the authority to regulate and develop inter-state rivers and river valleys in the national interest.

Further, Article 262 empowers Parliament to adjudicate disputes related to inter-state river waters and allows the exclusion of judicial intervention in such matters.

Key Issues in Water Governance in India

Fragmented Institutional Framework

Water governance in India is highly fragmented because multiple institutions at the central and state levels are involved in water management. Since water is mainly a state subject, disputes frequently arise between states over river water sharing and resource allocation.

Predominance of Engineering-Centric Approach

India’s water management policies have traditionally focused on large-scale infrastructure projects such as dams, canals, and irrigation systems. This engineering-centric approach mainly emphasises increasing water supply through construction projects.

However, insufficient attention has been given to:

• Ecological sustainability,

• Water conservation,

• Demand management,

• Efficient use of water resources.

Agricultural Policies and Water Misuse

Agricultural policies promoting water-intensive crops such as rice and wheat have encouraged excessive groundwater extraction. Minimum Support Price (MSP) systems and input subsidies have incentivised cultivation patterns that are not suitable for water-scarce regions.

This has contributed to severe groundwater depletion and declining water-use efficiency in many parts of the country.

Lack of Ecosystem-Based Approach

Water governance in India often fails to recognise the close relationship between land, water, forests, wetlands, and ecosystems. Environmental flows or e-flows, which are necessary to maintain river ecosystems, are frequently ignored.

As a result, rivers, wetlands, and aquatic biodiversity have suffered significant degradation.

Weak Data and Monitoring Systems

India lacks reliable, comprehensive, and accessible water-related data. Inadequate monitoring systems and poor coordination among agencies result in inefficient planning and improper allocation of water resources.

Neglect of Demand-Side Management

Most water policies in India continue to focus on increasing water supply rather than managing water demand. Limited emphasis is placed on:

• Water-use efficiency,

• Recycling and reuse,

• Conservation practices,

• Rational pricing of water.

Government Initiatives for Water Management

The Government of India has launched several initiatives to address water scarcity and improve water governance.

The Jal Shakti Abhiyan, launched in 2019, focuses on water conservation, rainwater harvesting, and groundwater recharge in water-stressed districts.

The AMRUT 2.0 Scheme, launched in 2021, aims to make cities water-secure and self-reliant through improved urban water infrastructure, rejuvenation of water bodies, and development of green spaces.

The Amrit Sarovar Mission seeks to develop and rejuvenate 75 water bodies in every district to strengthen local water conservation efforts.

The National Aquifer Mapping Programme (NAQUIM) helps in mapping aquifers and promoting sustainable groundwater management.

Similarly, the Atal Bhujal Yojana focuses on improving groundwater management in areas facing critical groundwater depletion and over-exploitation.

The Jal Jeevan Mission (JJM), launched in 2019, aims to provide every rural household with safe and adequate drinking water through functional tap water connections.

Conclusion

India’s water crisis highlights the urgent need to move away from a fragmented and engineering-dominated approach toward a more integrated and sustainable framework of water governance.Water must be treated as a shared and finite resource that requires coordinated management across sectors and states. Greater emphasis should be placed on sustainability, conservation, efficiency, ecological protection, and equitable distribution of water resources.