Vijay has addressed a letter to Prime Minister Narendra Modi challenging the official stance taken by the Jal Shakti Ministry concerning the Mekedatu project. The core of the disagreement involves the interpretation of a Supreme Court judgment delivered on February 16, 2018.

According to the Jal Shakti Ministry, the 2018 Supreme Court ruling does not explicitly mandate that the state of Karnataka must secure the consent of lower riparian states—such as Tamil Nadu—before constructing infrastructure across the Cauvery River. Vijay’s objection suggests a fundamental disagreement with this interpretation, implying that the project should not proceed without the agreement of all affected downstream parties.

The Mekedatu project has long been a point of contention between Karnataka and Tamil Nadu, with water-sharing rights and environmental impact being the primary concerns. While the Ministry’s reply focuses on the technical legal requirements of the Supreme Court order, Vijay’s intervention highlights the ongoing political and regional sensitivity surrounding the river's management. The letter serves as a formal request for the Prime Minister to intervene or clarify the federal government's position, as the current interpretation by the Ministry is viewed as detrimental to the interests of the downstream states.