Recently, the National Green Tribunal has directed all State governments to take urgent measures to mitigate arsenic and fluoride contamination in groundwater, while asking the Centre to monitor implementation across the country.
- The directions were issued during a suo motu hearing based on media reports highlighting the severity of contamination.
- Public Health Implications: Long-term exposure to contaminated groundwater results in chronic and often irreversible health conditions, disproportionately affecting rural populations that rely on untreated sources, thereby creating a silent but severe public health burden.
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NGT’s 2026 Enforcement Framework for Groundwater Contamination Mitigation
- Granular Data Reporting: The Tribunal has directed States to furnish detailed contamination data at district, block, and village or ward levels, so that policy responses become targeted and evidence-based rather than generic.
- Strengthened Regulatory Oversight: The Central Ground Water Authority (CGWA) has been tasked with closely monitoring mitigation efforts, ensuring that remedial measures are effectively implemented and periodically reviewed on the ground.
- Time-Bound Mitigation Measures: States are required to adopt appropriate filtration and purification technologies within a defined timeframe, signalling a shift towards strict compliance and outcome-oriented governance.
- Legal Accountability Framework: The NGT has invoked key environmental principles such as the Polluter Pays Principle and Sustainable Development, under the NGT Act, 2010, to ensure that institutional inaction or negligence attracts legal accountability.
| Arsenic vs Fluoride Contamination: Comparative Profile |
| Dimension |
Arsenic (As) |
Fluoride (F) |
| Nature & Use |
- A naturally occurring toxic metalloid used in pesticides, alloys, electronics, and wood preservatives, which becomes hazardous when present in drinking water
|
- A reactive element used in toothpaste, aluminium production, fertilisers, and controlled water fluoridation, but harmful in excess concentration
|
| Geogenic Source |
- Released from alluvial sediments of the Ganga–Brahmaputra basin through geochemical processes such as reductive dissolution
|
- Leaches from fluoride-bearing minerals like fluorite due to rock weathering in hard rock regions
|
| Anthropogenic Source |
- Enhanced by industrial discharge, mining activities, and legacy use of arsenic-based pesticides
|
- Increased due to excessive use of phosphate fertilisers, industrial effluents, and groundwater over-extraction
|
| Hydrogeological Conditions |
- Mobilised under anaerobic and stagnant aquifer conditions, which facilitate arsenic release into groundwater
|
- More soluble in alkaline conditions with low calcium levels, often found in deeper aquifers
|
| Health Impact |
- Causes arsenicosis, leading to skin lesions, pigmentation disorders, and increased risk of cancers
|
- Causes fluorosis, including dental discoloration and skeletal deformities resulting in disability
|
| Spatial Distribution |
- Predominantly affects eastern and north-eastern India, including Bihar, West Bengal, and Uttar Pradesh
|
- Widely prevalent in western, central, and southern India, including Rajasthan, Gujarat, and Karnataka
|
Challenges that need to be tackled
- Economic Burden: Chronic illness leads to high out-of-pocket healthcare expenditure and reduced earning capacity, especially among vulnerable rural households.
- Social Consequences: Physical manifestations such as skin lesions and dental discoloration often result in stigma, exclusion, and reduced social mobility.
- Governance Issues:
- Unregulated groundwater extraction through private borewells continues unchecked.
- Subsidised electricity for irrigation encourages excessive pumping, aggravating contamination.
- Institutional fragmentation weakens coordination across agencies.
- Implementation Bottlenecks:
- High cost and maintenance challenges of purification systems.
- Low community acceptance of treated water.
- Weak last-mile delivery and monitoring capacity.
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About National Green Tribunal (NGT)
- Establishment & Legal Basis: The National Green Tribunal (NGT) was established under the National Green Tribunal Act, 2010 as a specialised judicial body for environmental adjudication.
- Powers & Authority: The Tribunal exercises powers equivalent to a civil court, including the authority to award compensation, order restitution, and enforce environmental liability.
- Jurisdiction: The NGT has jurisdiction over key environmental legislations, including the Water (Prevention and Control of Pollution) Act, 1974, the Environment (Protection) Act, 1986, and the Forest (Conservation) Act, 1980.
- Functional Role: The Tribunal plays a crucial role in ensuring time-bound environmental justice, strengthening regulatory accountability, and enforcing principles such as sustainable development and polluter pays.
About Central Ground Water Authority (CGWA)
- Statutory Status: The Central Ground Water Authority (CGWA) is a statutory body constituted under the Environment (Protection) Act, 1986 to regulate and control groundwater development and management in India.
- Administrative Control: The CGWA functions under the Ministry of Jal Shakti and operates as the primary regulatory authority for groundwater governance in the country.
- Regulatory Functions: The Authority is responsible for issuing guidelines, granting permissions for groundwater extraction, and taking necessary measures to prevent over-exploitation of groundwater resources.
- Area Classification: The CGWA identifies and classifies regions into over-exploited, critical, and semi-critical categories, and imposes regulatory restrictions on groundwater withdrawal in such areas.
- Sustainable Management Role: The Authority promotes sustainable groundwater management practices, including rainwater harvesting and artificial recharge mechanisms, to enhance long-term water security.
- Role in Current Context: In the present context, the CGWA plays a crucial role in ensuring compliance with NGT directions, monitoring implementation, and translating policy decisions into effective on-ground action.
About Jal Jeevan Mission (JJM)
- Launch & Objective: The Jal Jeevan Mission (2019) aims to provide Functional Household Tap Connections (FHTCs) to every rural household, ensuring safe and adequate drinking water.
- Focus on Water Quality: The Mission places strong emphasis on water quality monitoring, especially in arsenic- and fluoride-affected areas.
- Community Participation: It promotes a community-led approach, involving Village Water & Sanitation Committees (VWSCs) in planning and implementation.
- Infrastructure Development: The scheme supports the creation of piped water supply systems, treatment plants, and source sustainability measures.
- Current Relevance: In contaminated regions, JJM serves as a critical intervention for reducing dependence on unsafe groundwater sources.
Groundwater Governance Framework in India
- Fragmented Institutional Structure: Groundwater governance involves multiple agencies at Central and State levels, leading to coordination challenges and overlaps.
- Regulatory Mechanism: The Central Ground Water Authority regulates groundwater extraction, while States implement local water laws and policies.
- Legal Framework: Groundwater is largely treated as a private resource linked to land ownership, limiting effective regulation and control.
- Policy Initiatives: Key initiatives include Atal Bhujal Yojana (Atal Jal), National Aquifer Mapping Programme (NAQUIM), and Jal Jeevan Mission.
- Sustainability Measures: The framework emphasises rainwater harvesting, aquifer recharge, demand-side management, and water-use efficiency.
- Key Challenges: The system faces issues such as over-extraction, weak enforcement, data gaps, and lack of community participation, which hinder sustainable groundwater management.
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Way Forward
- Strengthening Data-Driven Governance: Develop a real-time, GIS-based groundwater quality monitoring system integrating data from States and central agencies for early detection and targeted intervention.
- Technological Interventions: Promote low-cost, decentralised water purification technologies such as community filtration plants and household-level solutions, especially in rural hotspots.
- Regulating Groundwater Extraction: Enforce stricter regulation of borewells, rationalise electricity subsidies, and incentivise water-efficient irrigation practices like micro-irrigation.
- Source Substitution & Safe Supply: Expand access to treated surface water under schemes like Jal Jeevan Mission, reducing dependence on contaminated groundwater.
- Community Participation & Behavioural Change: Strengthen awareness campaigns and local governance institutions to improve acceptance of safe drinking water practices.
- Inter-Agency Coordination: Ensure better coordination between central bodies like CGWA and state water departments, supported by clear accountability mechanisms.
Conclusion
The National Green Tribunal intervention highlights that groundwater contamination is a critical public health and governance challenge, requiring integrated action through monitoring, regulation, technology, and community participation to ensure safe water access and long-term water security.
25 Apr 2026
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