BharatNotes Overview
India's water governance challenge is among the most complex in the world. The country is home to 18% of the global population but possesses only 4% of freshwater resources. Rivers remain the backbone of Indian civilisation, agriculture, and ecology -- yet CPCB has identified 296 polluted river stretches across 271 rivers in 32 States/UTs (2022-23 monitoring data). Simultaneously, India is the world's largest groundwater user, extracting approximately 239 bcm annually (CGWB 2022), with 87% used for irrigation.
The policy response spans flagship missions like Namami Gange and Jal Jeevan Mission, structural interventions such as river interlinking, regulatory frameworks including the Dam Safety Act, 2021, and dispute resolution through interstate water tribunals. For UPSC, this topic cuts across GS-3 (environment, biodiversity, disaster management) and occasionally GS-2 (governance, federalism in water disputes).
River Pollution in India
Scale of the Problem
- CPCB identified 296 polluted river stretches (PRS) across 271 rivers based on 2022-23 monitoring data under the National Water Quality Monitoring Programme (NWMP)
- This represents a decline from 351 PRS in 2018, reflecting improved sewage treatment and enforcement
- 37 Priority I stretches remain -- rivers with BOD exceeding 30 mg/L, indicating acute biological collapse
- Maharashtra leads with 54 polluted river stretches, followed by states with major industrial corridors
Key Water Quality Indicators
| Indicator | What It Measures | Significance |
|---|---|---|
| BOD (Biochemical Oxygen Demand) | Oxygen required by microorganisms to decompose organic matter | Higher BOD = more organic pollution; BOD > 3 mg/L indicates pollution |
| DO (Dissolved Oxygen) | Oxygen available in water for aquatic life | DO < 4 mg/L is harmful to fish; healthy rivers have DO > 6 mg/L |
| COD (Chemical Oxygen Demand) | Oxygen needed to oxidise all organic and inorganic matter | Higher than BOD; indicates industrial chemical pollution |
| Faecal Coliform | Presence of bacteria from human/animal waste | Indicator of sewage contamination; high levels make water unsafe |
| Total Dissolved Solids (TDS) | Concentration of dissolved substances | High TDS affects taste, usability; BIS limit for drinking: 500 mg/L |
Major Causes of River Pollution
| Source | Contribution |
|---|---|
| Untreated sewage | Dominant source -- over 70% of sewage in India is discharged untreated |
| Industrial effluents | Toxic chemicals, heavy metals from tanneries, textiles, pharma, paper mills |
| Agricultural runoff | Pesticides, fertilisers (nitrogen, phosphorus) causing eutrophication |
| Solid waste dumping | Municipal waste, plastic, and religious offerings dumped directly into rivers |
| Sand mining | Alters riverbed morphology, affects groundwater recharge, destroys habitats |
For Prelims: BOD is the most commonly used indicator for classifying polluted river stretches. CPCB classifies rivers with BOD > 3 mg/L as polluted. Priority I stretches have BOD > 30 mg/L.
Namami Gange Programme
Programme Overview
| Feature | Detail |
|---|---|
| Launched | June 2014 as a flagship programme under the Ministry of Jal Shakti |
| Implementing agency | National Mission for Clean Ganga (NMCG) |
| Original outlay | Rs 20,000 crore (2014-2020) |
| Namami Gange Mission-II | Approved with Rs 22,500 crore till 2026 -- includes Rs 11,225 crore for existing liabilities and Rs 11,275 crore for new projects |
| Total investment | Over Rs 40,000 crore invested cumulatively as of 2025 |
| Projects sanctioned | 492 projects valued at Rs 40,121 crore; 307 completed and operational |
Key Components
| Component | Details |
|---|---|
| Sewage treatment infrastructure | 206 projects sanctioned (Rs 33,004 crore); 127 completed; 136 STPs operational with 3,780 MLD capacity |
| Target capacity | Cumulative sewage treatment capacity of 7,000 MLD by December 2026 |
| Industrial pollution abatement | Grossly Polluting Industries (GPIs) along Ganga monitored; real-time effluent monitoring; closure of non-compliant units |
| River surface cleaning | Trash skimmers deployed; floating debris collection |
| Biodiversity conservation | Ganga Praharis (community river guards); Turtle Sanctuaries; Dolphin conservation |
| Rural sanitation | Ganga Gram scheme -- ODF (Open Defecation Free) villages along Ganga |
| Afforestation | Plantation along Ganga banks to prevent soil erosion |
| Public participation | Ganga Task Force; Ganga Vichar Manch; Ganga Quest (awareness quiz) |
Progress and Challenges
Achievements:
- Significant improvement in DO levels at many monitoring points along the Ganga
- Over 307 projects completed, including major STPs in Varanasi, Haridwar, Kanpur, Prayagraj
- Aviral Dhara (uninterrupted flow) and Nirmal Dhara (unpolluted flow) pursued as twin objectives
Challenges:
- Gap between installed STP capacity and actual utilisation
- Operation and maintenance (O&M) of STPs by urban local bodies remains weak
- Tributaries (Yamuna, Kali, Ramganga) contribute significant pollution load to the main Ganga stem
- Encroachments on floodplains continue
For Mains: Namami Gange has shifted focus from merely building STPs to a holistic "river-centric" approach -- integrating sewage management, biodiversity, afforestation, and community participation. However, the CAG has flagged underutilisation of created STP capacity and O&M deficiencies. For Mains answers, discuss both the programme's innovative aspects and implementation gaps.
Interlinking of Rivers
National Perspective Plan
The idea of interlinking rivers was first proposed by Sir Arthur Cotton in the 19th century. The National Perspective Plan (NPP) was formulated by the Ministry of Water Resources in 1980 and identifies 30 links -- 14 under the Himalayan component and 16 under the Peninsular component.
Ken-Betwa Link Project (KBLP)
| Feature | Detail |
|---|---|
| Status | First project under the National Perspective Plan; foundation stone laid by PM Modi on 25 December 2024 at Khajuraho, Madhya Pradesh |
| Rivers involved | Ken (surplus) to Betwa (deficit) -- both tributaries of Yamuna |
| States | Madhya Pradesh and Uttar Pradesh |
| Cost | Rs 44,605 crore (at 2020-21 price levels) |
| Timeline | Proposed implementation in 8 years |
| Key infrastructure | Daudhan Dam (77 m height, 2 km width); 221-km link canal including a 2-km tunnel |
| Benefits | Annual irrigation of 10.62 lakh hectares; drinking water for 62 lakh people; 103 MW hydropower + 27 MW solar |
Arguments For and Against Interlinking
| Arguments For | Arguments Against |
|---|---|
| Addresses regional water imbalance -- surplus basins to deficit basins | Massive ecological disruption -- affects river ecosystems, wetlands, aquatic biodiversity |
| Flood mitigation in surplus basins | Displacement of communities; submergence of forest land (Ken-Betwa affects Panna Tiger Reserve) |
| Irrigation expansion in drought-prone areas | Enormous cost -- estimated Rs 5.6 lakh crore for all 30 links |
| Hydropower generation | Inter-state disputes over "surplus" water -- no basin truly has surplus |
| Drinking water security | Climate change may alter rainfall patterns, making surplus/deficit assumptions unreliable |
For Prelims: Ken-Betwa is the first interlinking project under the National Perspective Plan. The Ken river is in Madhya Pradesh (flows through Panna Tiger Reserve) and the Betwa is in Uttar Pradesh. Both are tributaries of the Yamuna.
National Water Policy 2012
Key Provisions
| Provision | Detail |
|---|---|
| Water as economic good | Advocates treating water as an economic good to promote conservation; pricing of water to reflect its scarcity |
| Priority of allocation | Drinking water > Irrigation > Hydropower > Ecology > Agro-industries > Non-agricultural industries > Navigation |
| Groundwater | Advocates that groundwater should be held in public trust; community-based management |
| Demand management | Emphasises water-use efficiency, micro-irrigation, recycling and reuse of wastewater |
| Institutional reform | Calls for a National Water Framework Law; restructuring of CWC and CGWB |
| Data and information | National Water Informatics Centre for real-time data on water resources |
| Climate change adaptation | Integrate climate change projections into water resources planning |
| Rainwater harvesting | Mandatory rainwater harvesting in all new constructions; recharge of aquifers |
For Mains: The National Water Policy 2012 was a progressive document but remains largely unimplemented. A new draft National Water Policy has been under discussion. Key critique: the policy treats water primarily as an economic commodity rather than a fundamental right. Compare with the Right to Water under Article 21 (right to life) as interpreted by the Supreme Court.
Groundwater Crisis
India's Groundwater Profile
| Fact | Detail |
|---|---|
| Global rank | India is the world's largest groundwater user |
| Annual extraction | Approximately 239 bcm (CGWB 2022 assessment) |
| Stage of extraction | 59% nationally (annual extraction / annual extractable resource) |
| Use for irrigation | 87% of extracted groundwater used for irrigation; groundwater irrigates over 60% of India's irrigated area |
| Rural drinking water | 85% of rural drinking water needs met from groundwater |
| Urban water | 45% of urban water consumption from groundwater |
Block-Level Assessment (CGWB 2024)
| Category | Number of Blocks | Percentage |
|---|---|---|
| Safe | 4,951 | 73.39% |
| Semi-critical | 711 | 10.54% |
| Critical | 206 | 3.05% |
| Over-exploited | 751 | 11.13% |
For Prelims: Over-exploited blocks have declined from 17.24% (2017) to 11.13% (2024). States with maximum over-exploitation: Punjab, Haryana, Rajasthan, Karnataka, Tamil Nadu, Delhi.
Key Interventions
- Atal Bhujal Yojana (ABY): Rs 6,000 crore World Bank-assisted scheme for community-led groundwater management in 7 states (Gujarat, Haryana, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan, Uttar Pradesh)
- Aquifer Mapping: CGWB's National Aquifer Mapping and Management Programme (NAQUIM) -- mapping aquifers across India for scientific groundwater management
- Jal Shakti Abhiyan: Campaign for water conservation, rainwater harvesting, and renovation of traditional water bodies
Jal Jeevan Mission (JJM)
Mission Overview
| Feature | Detail |
|---|---|
| Launched | 15 August 2019 by PM Modi |
| Objective | Provide Functional Household Tap Connection (FHTC) to every rural household by 2024 (extended to 2028) |
| Ministry | Ministry of Jal Shakti, Department of Drinking Water and Sanitation |
| Total outlay | Rs 3.60 lakh crore (Centre + State share) |
| Coverage at launch | 3.23 crore households (16.71%) had tap connections in August 2019 |
Progress (as of March 2026)
| Metric | Status |
|---|---|
| Total rural households | Approximately 19.36 crore |
| Households with tap water | Approximately 15.82 crore (81.71%) |
| New connections since launch | Over 12.48 crore households connected |
| States/UTs with 100% coverage | 11 -- including Goa, Haryana, Gujarat, Arunachal Pradesh, Telangana |
| Districts with full coverage | 192 districts, 1,912 blocks, 1,25,185 Gram Panchayats |
| Timeline extension | Extended to 2028 (Union Budget 2025-26) |
Quality Assurance
- 2,843 laboratories tested 38.78 lakh water samples across 4.50 lakh villages during 2025-26
- 24.80 lakh rural women trained to test water quality using Field Testing Kits in over 5 lakh villages
For Prelims: JJM was launched on 15 August 2019. Coverage has increased from 16.71% to over 81% as of March 2026. Goa was the first state to achieve 100% tap water coverage. The mission has been extended to 2028.
Dam Safety Act, 2021
Key Provisions
| Feature | Detail |
|---|---|
| Enacted | Notified on 14 December 2021; provisions effective from 30 December 2021 |
| Scope | All dams with height > 15 m; or height 10-15 m with specified design/structural conditions |
| National Committee on Dam Safety (NCDS) | Policy-making body; recommends regulations and safety standards |
| National Dam Safety Authority (NDSA) | Implements NCDS policies; provides technical assistance to states; resolves inter-state disputes on dam safety |
| State Dam Safety Organisation (SDSO) | Each state must establish an SDSO for surveillance, inspection, and monitoring |
| Duties of dam owners | Establish Dam Safety Unit; prepare Emergency Action Plans; conduct Comprehensive Safety Evaluations at regular intervals |
| Hazard classification | Dams classified based on hazard risk |
| Penalties | Obstruction/non-compliance: up to 1 year imprisonment; if loss of life occurs: up to 2 years |
For Prelims: The Dam Safety Act, 2021 establishes a two-tier national structure -- NCDS (policy) and NDSA (implementation). India has over 5,700 large dams, many built before independence, making safety critical.
Interstate Water Disputes
Constitutional and Legal Framework
| Provision | Detail |
|---|---|
| Article 262 | Parliament may provide for adjudication of inter-state water disputes; can bar Supreme Court jurisdiction |
| Interstate River Water Disputes Act, 1956 | Enacted under Article 262; provides mechanism for constituting tribunals |
| Entry 56, Union List | Regulation and development of inter-state rivers to the extent declared expedient by Parliament |
Major Water Dispute Tribunals
| Tribunal | Year | States Involved | Status |
|---|---|---|---|
| Krishna Water Disputes Tribunal I | 1969 | Karnataka, Maharashtra, Andhra Pradesh | Decision published in Official Gazette; effective |
| Godavari Water Disputes Tribunal | 1969 | Maharashtra, Karnataka, Andhra Pradesh, Madhya Pradesh, Odisha | Decision effective |
| Narmada Water Disputes Tribunal | 1969 | Gujarat, Madhya Pradesh, Maharashtra, Rajasthan | Decision effective |
| Ravi-Beas Water Tribunal | 1986 | Punjab, Haryana, Rajasthan | Decision NOT notified; not yet effective |
| Cauvery Water Disputes Tribunal | 1990 | Karnataka, Tamil Nadu, Kerala, Puducherry | Decision effective; Supreme Court modified allocation in 2018 |
| Krishna Water Disputes Tribunal II | 2004 | Karnataka, Telangana, Andhra Pradesh, Maharashtra | Decision NOT notified |
| Mahadayi Water Disputes Tribunal | 2010 | Goa, Karnataka, Maharashtra | Decision published; effective |
Key Challenges in Water Disputes
- Protracted proceedings -- tribunals take decades to deliver awards (Cauvery: 28 years)
- Non-notification of awards -- Central Government delays publishing awards in the Official Gazette
- Political dimensions -- water sharing becomes an electoral issue, hardening negotiating positions
- Interstate River Water Disputes (Amendment) Bill, 2019 -- proposed a permanent tribunal to replace ad hoc tribunals; not yet enacted
For Mains: Interstate water disputes illustrate the tension between cooperative federalism and competitive federalism. Article 262 deliberately excludes Supreme Court jurisdiction to encourage negotiated settlements, yet tribunals have been slow and their awards often contested politically. Discuss the need for a permanent tribunal structure and better data-sharing mechanisms.
Composite Water Management Index (CWMI)
NITI Aayog's Water Governance Assessment
| Feature | Detail |
|---|---|
| Launched | 2018 by NITI Aayog |
| Purpose | Measure water management performance across states; promote cooperative and competitive federalism |
| Parameters | 9 themes, 28 indicators covering groundwater, surface water restoration, irrigation, drinking water, policy/governance |
| Top performers (2019) | Gujarat (1st), Rajasthan, Andhra Pradesh, Madhya Pradesh |
| Key finding | 21 major Indian cities (including Delhi, Bengaluru, Chennai, Hyderabad) risk running out of groundwater by 2030 |
| Warning | 600 million people face high to extreme water stress; approximately 2 lakh people die annually due to inadequate access to safe water |
Recent Developments (2024–2026)
Namami Gange Phase II — Progress 2024
The Namami Gange Programme's second phase (2021–2026), with an enhanced budget of ₹22,500 crore, continued to make progress in 2024. Sewage treatment infrastructure in the Ganga basin has been expanded to over 4,912 MLD treatment capacity across 132 STPs, with 131 Ghats renovated and 33 crematoriums constructed. Real-time water quality monitoring stations (168+ installed) provide data for CPCB's WQMIS (Water Quality Management Information System).
Biological health indicators for the Ganga have shown improvement: the fish-eating Gangetic Dolphin population has been more frequently observed in stretches from Bijnor to Farakka. The Arth Ganga concept — linking economic activities with river conservation — has generated over 1.8 crore person-days of livelihood. However, the Indo-Gangetic Plain continues to face industrial effluent discharge from tanneries (Kanpur), textile (Surat/Tiruppur on Sabarmati and Noyyal rivers), and chemical industries.
UPSC angle: Namami Gange budget (₹22,500 crore), STP capacity (4,912 MLD), Arth Ganga, and Gangetic Dolphin status are Prelims data points; treatment gap and industrial pollution challenges are Mains content.
Ken-Betwa River Interlinking Project — 2024 Status
The Ken-Betwa River Interlinking Project — India's first river interlinking project under the National Perspective Plan — received Cabinet approval in December 2021 and began construction in 2024. The project will transfer surplus water from Ken River (Madhya Pradesh) to the deficit Betwa River basin (Madhya Pradesh and Uttar Pradesh), irrigating approximately 10.62 lakh hectares and providing drinking water to 62 lakh people.
The project has faced environmental scrutiny because the Ken-Ghariyal Sanctuary, home to the critically endangered Gharial (Gavialis gangeticus) and Mugger Crocodile, lies within the project's impact zone. The Supreme Court's approval (2023) came with conditions requiring additional conservation measures for the Gharial. Civil society groups raised concerns about the submergence of 9,000 hectares of Panna Tiger Reserve.
UPSC angle: Ken-Betwa project (India's first interlinking project, Cabinet approval 2021, construction from 2024), the Gharial conservation controversy, and benefits vs ecological costs are high-priority Mains GS-3 topics.
Cauvery Water Dispute — Supreme Court Order 2024
The Cauvery water dispute between Karnataka and Tamil Nadu continued with Supreme Court intervention in 2024. The court directed additional water releases from Karnataka to Tamil Nadu during deficit monsoon years, following the CWRC (Cauvery Water Regulation Committee) recommendations. The dispute illustrates inter-state water governance challenges under India's constitutional framework (water is a State subject under List II, but inter-state rivers are Union subject under List I via Entry 56).
The 2024 water-sharing season saw tensions as Karnataka claimed distress due to below-normal southwest monsoon filling Cauvery reservoirs. The Cauvery Water Management Authority (CWMA) and CWRC, established pursuant to the Supreme Court's 2018 final order, continued to function as the regulatory mechanism, though compliance challenges persist.
UPSC angle: Cauvery dispute history, CWMA/CWRC structure, constitutional provisions (Entry 17 State List for water, Entry 56 Union List for inter-state rivers), and the SC 2018 final order are Mains GS-2/GS-3 content.
Key Terms for Quick Revision
| Term | Meaning |
|---|---|
| NMCG | National Mission for Clean Ganga -- implementing agency of Namami Gange Programme |
| BOD | Biochemical Oxygen Demand -- measures organic pollution; rivers with BOD > 3 mg/L are classified as polluted |
| DO | Dissolved Oxygen -- essential for aquatic life; healthy rivers have DO > 6 mg/L |
| MLD | Million Litres per Day -- unit for measuring sewage treatment capacity |
| STP | Sewage Treatment Plant -- facility that treats wastewater before discharge into water bodies |
| CGWB | Central Ground Water Board -- national apex body for groundwater assessment and management |
| FHTC | Functional Household Tap Connection -- the unit of measurement under Jal Jeevan Mission |
| CWMI | Composite Water Management Index -- NITI Aayog's tool for ranking states on water governance |
| NDSA | National Dam Safety Authority -- regulatory body under the Dam Safety Act, 2021 |
| NPP | National Perspective Plan -- framework for interlinking 30 river systems across India |
| ABY | Atal Bhujal Yojana -- World Bank-assisted groundwater management scheme in 7 states |
| NAQUIM | National Aquifer Mapping and Management Programme -- CGWB's aquifer mapping initiative |
Exam Strategy
For Mains Answer Writing: Water governance questions are high-frequency in GS-3 (environment, conservation) and occasionally appear in GS-2 (governance, federalism). Structure answers around: the scale of the problem (data on pollution, groundwater depletion), existing policy framework (Namami Gange, JJM, NWP 2012), implementation gaps (STP utilisation, tribunal delays, Centre-State coordination), and a way forward that includes demand-side management, community participation, and technology solutions (real-time monitoring, remote sensing for groundwater).
For Prelims: Key numbers -- 296 polluted river stretches (CPCB 2022-23), JJM coverage 81.71% as of March 2026, Namami Gange Mission-II outlay Rs 22,500 crore, Ken-Betwa cost Rs 44,605 crore, CGWB over-exploited blocks 11.13% (2024), groundwater extraction 239 bcm annually, Dam Safety Act 2021 scope: dams > 15 m height.
Sources: PIB (pib.gov.in), NMCG (nmcg.nic.in), CPCB (cpcb.nic.in), CGWB (cgwb.gov.in), Jal Jeevan Mission (jaljeevanmission.gov.in), NITI Aayog (niti.gov.in), CWC (cwc.gov.in). For current affairs on water policy and environmental governance updates, visit Ujiyari.com.
