The Vienna Convention on the Law of Treaties (1969) states in Article 26 that no bilateral agreement can be unilaterally suspended. Subsequently, India lacks the legal authority to block water supplies to Pakistan, regardless of any agreements.

In a hypothetical scenario without the Indus Water Treaty (IWT), India would not hold proprietary rights over the waters flowing into Pakistan, as international law mandates equitable sharing of transboundary waters.

The water-sharing dynamic between India and Pakistan is not solely governed by the IWT. While the treaty provides a framework for resolving water disputes amicably, it is not the exclusive legal instrument guiding this relationship.

Geographical positioning as an upper riparian state does not grant India unchallenged claims to these water resources. Instead, international law regulates the sharing of water between upper and lower riparian states, emphasizing that all parties’ rights and needs must be considered.

Key international agreements such as the UN Watercourses Convention, the Stockholm Declaration, and the Helsinki Rules impose obligations on nations regarding transboundary water management. According to the UN Watercourses Convention, India, as an upper riparian state, does not possess outright ownership of the water resources within its borders; instead, these resources are regarded as shared, held in trust, with downstream riparian states retaining reasonable rights to their use.

The Convention asserts that access to water is a fundamental human right. Article 10 prioritizes the right to access drinking water over water used for agriculture or electricity generation, underscoring its essential nature for human survival.

The Mar del Plata Action Plan also recognizes water as a fundamental human right, asserting that all individuals should have access to safe drinking water in sufficient quantities. Pakistan, being an agricultural country, is particularly vulnerable to water deprivation.

When it is denied its rightful share of water, it threatens the lives of millions, representing not just an injustice but a significant humanitarian crisis. Under the UN Water Convention, India is required to ensure that Pakistan has access to sufficient water for essential needs such as drinking and agriculture.

In light of Article 25 of the Universal Declaration of Human Rights, which affirms the right to a standard of living ensuring health and well-being, the denial of water access constitutes a grave injustice. Resolution A/RES/64/292 recognizes water as a fundamental human right, emphasizing that India cannot deny this right based solely on its status as an upper riparian state.

Denying access to clean water is a violation that transcends privilege, framing it as a basic human right that must be upheld for all.