Karnataka has formally urged the Central Water Commission (CWC) to expedite technical clearance for the Mekedatu drinking water and reservoir project on the Cauvery River, according to a report from India Today, with the state arguing that the drinking water needs of Bengaluru and surrounding areas require a faster appraisal of the scheme. The request marks the latest escalation in a long-running effort by successive Karnataka governments to advance a project that has been on the drawing board for years and that has repeatedly run into opposition from neighbouring Tamil Nadu.
According to the report, state officials pressed the CWC to accelerate its review of the proposed reservoir-cum-drinking water scheme, contending that the city’s growing population and water requirements justify a speedier technical clearance. The Mekedatu project, named after a point on the Cauvery where the river flows between Karnataka and Tamil Nadu before descending into Tamil Nadu’s Mettur region, has been a long-standing demand of Karnataka’s political establishment but has been contested by Tamil Nadu, which argues that any new dam on the inter-state Cauvery requires its consent under existing arrangements between the two riparian states.
Analysis: The renewed push signals continued political commitment from Karnataka’s government to deliver a project that has remained stalled despite multiple rounds of political rhetoric. The CWC’s technical clearance is a critical procedural step that must be completed before any construction can begin, and the speed of that review will determine how quickly the state can move toward ground-level implementation. The dispute also intersects with the legal and institutional framework governing the Cauvery, including the Cauvery Water Disputes Tribunal award and the Supreme Court’s 2018 judgment, both of which continue to shape the limits of what Karnataka can build without triggering fresh inter-state litigation.
The Mekedatu project, officially known as the Mekedatu Balancing Reservoir cum Drinking Water Project, envisages a reservoir across the Cauvery near Kanakapura in Ramanagara district, downstream of the Shivanasamudra falls. Karnataka has framed the scheme as primarily a drinking water project for Bengaluru and nearby towns, with an installed capacity of around 400 million litres per day of drinking water supply and a modest power generation component, though the project has also been criticised by Tamil Nadu political leaders and farmers’ groups who argue that any new structure on the river will affect downstream flows to the Mettur dam.
The Tamil Nadu government has consistently maintained that Karnataka cannot proceed with Mekedatu without its concurrence, pointing to the spirit of the inter-state agreements and the Supreme Court’s 2018 order that set out how Cauvery water should be shared. Tamil Nadu politicians have also argued that the project’s storage capacity is not merely for drinking water and that it could be used to divert water away from Tamil Nadu’s delta region, a charge that Karnataka has rejected.
The Central Water Commission’s role in the process is largely technical, involving scrutiny of the project’s design, hydrology, cost estimates and environmental aspects, rather than political or inter-state legal questions. A clearance from the CWC is a necessary but not sufficient condition for the project to proceed, with separate environmental and forest clearances, and ultimately the resolution of any legal challenges, also required. In recent years, the project has also had to satisfy the conditions of the National Board for Wildlife, given the project’s proximity to wildlife habitats, and the Ministry of Environment, Forest and Climate Change has previously raised questions that have delayed the proposal.
Analysis: Karnataka’s renewed appeal to the CWC reflects a broader political reality in which the state government, which has been vocal about Bengaluru’s water stress, sees tangible delivery on a flagship project as a way to demonstrate administrative action. However, the technical nature of the CWC’s mandate means that any acceleration would depend on the commission’s own internal processes, including the completion of detailed project reports, hydrological modelling and environmental reviews, rather than on political requests alone. The fact that the request has been made publicly also suggests that Karnataka wants to put on record its own urgency in the event that the project is held up further, either at the technical stage or in the courts.
Background and context:
The Mekedatu project has been under discussion since at least the early 2010s, with Karnataka first approaching the Centre for clearances during the Bharatiya Janata Party’s earlier tenure in the state. Tamil Nadu moved the Supreme Court against the project, arguing that it would amount to a new dam on the Cauvery in violation of the award and the court’s orders. The Supreme Court did not at that stage grant a stay on the project’s clearance process but made it clear that the project could not proceed without a comprehensive environmental and technical appraisal.
In subsequent years, the National Board for Wildlife and the Expert Appraisal Committee of the Ministry of Environment, Forest and Climate Change have both examined aspects of the project. Various reports indicate that questions have been raised about the impact of the project on wildlife corridors and on the riverine ecology of the Cauvery, and the project has also had to be aligned with the Centre’s Dam Safety Act, 2021, which introduced new requirements for the design and operation of large dams.
The political backdrop has also evolved. In 2024, the National Democratic Alliance government at the Centre, of which Karnataka’s BJP government is a part, returned to power, and there have been periodic signals that the project enjoys a sympathetic audience in New Delhi. The Karnataka government has, in parallel, expanded the irrigation component of its water strategy, including smaller projects and lift schemes, in an effort to address the concerns of farmers in the Cauvery basin.
The drinking water question has given Karnataka an additional political argument. Bengaluru’s population has continued to grow, and the city’s dependence on the Cauvery, supplemented by water from the Yelahanka-Shivajinagar corridor, the Arkavathy system and groundwater, has exposed the limits of existing supply, particularly during the pre-monsoon months. Reports from the Bangalore Water Supply and Sewerage Board have previously noted that the city’s per capita supply falls well below what is normally considered adequate, and that any major new project will be needed to meet the requirements of the city’s expanding metropolitan region.
Analysis: Karnataka’s framing of the project primarily as a drinking water scheme is, in part, a strategic choice designed to deflect Tamil Nadu’s argument that the reservoir will be used to expand irrigation or to store water that would otherwise flow downstream. By emphasising the urban water-supply rationale, the Karnataka government is seeking to align the project with a category of water use that is generally treated as a higher priority in national water policy, though this framing has not prevented Tamil Nadu from continuing to oppose the project on inter-state grounds.
What to watch next:
The CWC’s response to Karnataka’s request will be the immediate signal of how quickly the project can move. A decision to set up a formal technical appraisal committee, or to seek additional data from the Karnataka Water Resources Department, would mark the next procedural milestone. The state will also need to update the project cost and detailed project report, which are likely to have moved beyond the original estimates in line with the Dam Safety Act’s requirements.
Any move to accelerate technical clearance is also likely to be followed by a fresh round of objections from Tamil Nadu, both politically and, potentially, before the Supreme Court. The apex court has been monitoring the implementation of its 2018 Cauvery order, and any significant new activity on the Mekedatu front is likely to attract attention from that bench.
Environmental clearances will remain a separate bottleneck. The project will need to clear the National Board for Wildlife and the Expert Appraisal Committee, both of which have previously raised questions about the project’s impact. Any clearance from these bodies will, in turn, be scrutinised by civil society groups working on river ecology in the Cauvery basin, several of which have previously filed legal objections to the project.
Conclusion:
The Karnataka government’s push for faster technical clearance of the Mekedatu project underscores both the political importance of the scheme for the state and the constraints imposed by the inter-state and regulatory framework in which the project must move. The CWC’s response in the coming weeks will indicate whether the project has cleared its first significant procedural hurdle or whether the long delay that has characterised the proposal will continue. For Karnataka, the appeal is an opportunity to publicly demonstrate that it is doing everything within its power to deliver a project that it considers central to Bengaluru’s water security. For Tamil Nadu, any indication of progress on the technical side is likely to be met with renewed opposition. The outcome of this phase of the Mekedatu saga will shape not only the project’s future but also the wider trajectory of co-operation and litigation between the two southern states on the Cauvery.
Sources
India Today: https://www.indiatoday.in/india/karnataka/story/mekedatu-project-karnataka-seeks-faster-cwc-approval-for-bengaluru-water-needs-ptag-2985320-2026-09-02
Source: India Today – India
Corrections
If you believe this article contains an error, contact Herald Express with the source URL and supporting evidence.
Story synopsis gathered from: India Today – India — source
