Addressing climate change is central to securing India’s water future. Efforts to enhance climate resilience, such as promoting drought-resistant crops, improving irrigation efficiency, restoring ecosystems, and strengthening early warning systems are already underway.
India’s water resources are intrinsically linked to its climate system, with rainfall patterns, glacier dynamics, and seasonal variability playing a defining role in water availability for both agriculture and domestic use. Over the past three decades, India has made significant progress in improving water access while also addressing emerging climate-related challenges through policy, technology, and community-led initiatives.
Changes in Water Supply Over the Last 30 Years
India’s water availability has undergone notable shifts due to population growth, urbanisation, and changing climate patterns. According to government assessments, Per capita annual water availability in India has declined from over 1,800 cubic metres in the early 2000s to below 1,500 cubic metres in recent years, driven primarily by population growth and rising demand, uneven spatial distribution, groundwater depletion, and climate variability rather than a nationwide absolute decline in water resources. Studies indicate that climate variability and warming trends are contributing to more erratic monsoon patterns, including intense rainfall events and prolonged dry periods, which affect both groundwater recharge and surface water storage.
At the same time, India has significantly expanded irrigation infrastructure and rural water supply systems. Programmes such as large dam construction, canal networks, and groundwater development have supported agricultural productivity and food security.
Water Supply Needs and Sources
India’s water demand is largely driven by agriculture, which accounts for nearly 80% of total water use. Irrigation is essential for staple crops such as rice and wheat, particularly in semi-arid regions. Domestic water demand has also increased due to rising living standards, urbanisation, and population growth.
The country’s water supply is derived from multiple sources:
- Surface water: Rivers such as the Ganga, Brahmaputra, and Godavari form the backbone of water supply.
- Groundwater: India is one of the largest users of groundwater globally, supporting both irrigation and drinking water needs.
- Rainfall: The southwest monsoon contributes nearly 75–80% of annual rainfall, making it a critical determinant of water availability.
- Glacial systems: Himalayan glaciers serve as important long-term water reserves for northern river basins.
Pressures on Water Resources
India faces several pressures on its water resources. Increasing demand from agriculture, industry, and domestic sectors has placed stress on both surface and groundwater systems. In some regions, over-extraction of groundwater has led to declining water tables.
Climate change further amplifies these challenges. Changes in rainfall patterns, increased frequency of droughts and floods, and glacial retreat in the Himalayas affect water availability and reliability. Urban areas also face challenges related to water distribution, leakage, and wastewater management.
However, these pressures are being actively addressed through integrated water resource management approaches and policy interventions.
Government Initiatives and Conservation Efforts
India has undertaken a range of initiatives to improve water conservation and expand access:
- Jal Jeevan Mission (JJM): A flagship programme aimed at providing functional household tap connections to all rural households, significantly improving access to safe drinking water.
- Atal Bhujal Yojana: Focused on sustainable groundwater management through community participation in water-stressed regions.
- Pradhan Mantri Krishi Sinchayee Yojana (PMKSY): Promotes efficient irrigation practices such as “more crop per drop” through micro-irrigation systems.
- National Water Mission The National Action Plan on Climate Change: encourages water use efficiency and basin-level management.
- Rainwater harvesting and watershed development programmes have been scaled up across states to enhance groundwater recharge.
In addition, digital tools, remote sensing, and data-driven planning are increasingly being used to monitor water resources and improve decision-making.
Climate Action and Future Outlook
India’s commitment to sustainable development, including alignment with Sustainable Development Goal 6 (Clean Water and Sanitation), reflects a proactive approach to ensuring water security. By integrating climate action with water management strategies, India is working towards a more resilient and equitable water future.
This Post was submitted by Climate Scorecard India Country Manager, Ankita Padelkar.
Learn More Resources
- Ministry of Jal Shakti (Government of India) – Annual Reports
- NITI Aayog (2018), Composite Water Management Index
- Central Water Commission – Water and Related Statistics
- Ministry of Rural Development – Jal Jeevan Mission Dashboard
- National Action Plan on Climate Change – National Water Mission