Water Security: Groundwater Depletion & Management

1. THE SCALE OF INDIA'S WATER STRESS

Cue Words	Notes
Resource Gap & Per-Capita Decline	India holds ~18% of the global population but only ~4% of global freshwater resources. Per-capita water availability fell from **5,177 m³/year (1951)** to **1,486 m³/year (2021)**, heading toward the **1,000 m³ water-scarcity threshold** by 2030 (the 1,700 m³ mark already crossed marks "water stress"). **Dynamic Groundwater Resources Assessment 2025** (released 30 December 2025): national Annual Ground Water Recharge is **448.52 BCM**, Annual Extractable Resources **407.75 BCM**, and Annual Extraction **247.22 BCM** — a national Stage of Extraction of **60.63%**.
Regional Over-Exploitation Zonation	Nationally, 73.4% of assessment units are 'Safe', 10.5% 'Semi-critical', 3.05% 'Critical', and **11.1% 'Over-exploited'** (extraction exceeds annual replenishment). **Punjab** records the country's highest stress at extraction of **156.36% of annual recharge**, followed by **Rajasthan (147.11%)** and **Haryana (136.75%)** — precisely the MSP-driven paddy/wheat belt. CGWB's Annual Groundwater Quality Report 2025 finds 71.7% of groundwater meets quality standards nationally, but nitrate contamination (from fertiliser runoff) affects ~20% of samples, alongside fluoride and salinity hotspots. **NITI Aayog Composite Water Management Index (CWMI)**: Warns that **60 Crore people** face high-to-extreme water stress, with **21 major cities** projected to exhaust groundwater; CPCB's Water Quality Index notes **over 70% of surface water** is polluted and unfit for direct domestic consumption.

> **Summary**: India's water stress is simultaneously a quantity and a quality crisis — falling per-capita availability nationally is compounded by extreme regional over-extraction in the paddy-wheat belt (Punjab, Rajasthan, Haryana all now extracting well beyond annual recharge) and by fertiliser-driven nitrate contamination.

2. DRIVERS OF GROUNDWATER DEPLETION

Cue Words	Notes
Policy-Driven Over-Extraction	**Free/Subsidised Agricultural Power**: Enables unregulated, round-the-clock tubewell extraction with no marginal cost signal to farmers. **MSP-Driven Cropping Choices**: Assured procurement favours water-intensive paddy and sugarcane even in water-stressed regions (Punjab, Maharashtra), directly linking price policy to aquifer depletion. **Virtual Water Trade**: Exporting 1 kg of rice exports an estimated 3,000-5,000 litres of embedded water — meaning food-export competitiveness is partly subsidised by depleting domestic aquifers.
Hydro-Geological Constraints	Peninsular India's crystalline hard-rock aquifers have low storage capacity and slow recharge, causing sharper water-table drops than in the alluvial Indo-Gangetic belt for the same extraction volume.

> **Summary**: Groundwater depletion in India is less a natural-resource accident than a policy artefact — subsidised power and MSP-driven cropping patterns jointly incentivise extraction well beyond sustainable yield, worsened in hard-rock regions by poor natural recharge.

3. POLICY & INSTITUTIONAL FRAMEWORKS

Cue Words	Notes
Atal Bhujal Yojana (ABY) & Community Budgeting	A ₹6,000 Crore scheme mandating Gram Panchayat Water Security Plans built on local, participatory water budgeting — institutionalising demand-side management at the village level rather than only supply augmentation.
Jal Shakti Abhiyan, NAQUIM & Jal Jeevan Mission	**Jal Shakti Abhiyan ("Catch the Rain")**: Rainwater harvesting, desilting traditional tanks, building Amrit Sarovars (75 water bodies per district). **NAQUIM**: 3D geophysical aquifer mapping by CGWB enabling micro-level water planning. **Jal Jeevan Mission**: Piped rural water connections targeting all **19.3 Crore rural households** (~75%+ reached) at 55 litres per capita per day, integrating greywater treatment/reuse for local groundwater recharge. **Ken-Betwa Link Project (KBLP)**: First project under the National Perspective Plan for river interlinking, costing **₹44,605 Crore**, transferring surplus Ken (MP) water to the deficit Betwa (UP) to irrigate drought-prone Bundelkhand — though it cuts through the Panna Tiger Reserve, raising ecological trade-off concerns. **Coastal desalination** (reverse osmosis) is scaling in cities like Chennai to over **150 MLD**.

> **Summary**: India's institutional response layers community-led demand management (ABY) atop supply-side and infrastructural interventions (Jal Shakti Abhiyan, JJM, Ken-Betwa interlinking, desalination), with NAQUIM's scientific aquifer mapping providing the data backbone for both.

4. WATER CONSERVATION STRATEGIES: WAY FORWARD

Cue Words	Notes
Crop Diversification & Micro-Irrigation	Shifting farmers from paddy/sugarcane toward climate-resilient millets (Shree Anna), pulses, and oilseeds in dryland regions directly targets the MSP-driven demand distortion identified as a root cause. **PMKSY "Per Drop More Crop"**: Scaling sprinkler/drip micro-irrigation to roughly double water-use efficiency per unit of output.
Springshed Rejuvenation & Recharge	Re-establishing natural mountain springs across the Himalayas checks downslope runoff and secures water tables for hill communities — a low-cost, ecosystem-based complement to engineered recharge structures.

> **Summary**: The way forward converges on demand-side correction (crop diversification, micro-irrigation efficiency) rather than supply augmentation alone, since Punjab/Rajasthan/Haryana's extraction-to-recharge ratios show engineering fixes cannot outpace policy-driven over-demand.

UPSC Mains PYQs

• Water Crisis & Management: "India has only 4% of the world's freshwater resources but has to support over 18% of the global population." Analyse the primary causes of groundwater depletion in India, focusing on agricultural irrigation policies. Assess the role of the Atal Bhujal Yojana in institutionalizing community-led water budgeting. (15 Marks, 250 Words)
• MSP & Groundwater Stress: Critically examine how Minimum Support Price policy for paddy and sugarcane has contributed to regional groundwater over-exploitation in states like Punjab and Haryana. (15 Marks, 250 Words)
• Virtual Water Trade: What is "virtual water"? Discuss its implications for India's agricultural export strategy and water security. (10 Marks, 150 Words)
• Groundwater Quality: Discuss the major groundwater contamination challenges in India and their linkage to agricultural practices. (10 Marks, 150 Words)