"Pakistan will not accept any modifications or changes to the provisions of the Indus Waters Treaty (IWT). Our position is based on the principles enshrined in the treaty. And the treaty must be honoured in...Letter and spirit," Special Assistant to Prime Minister Tariq Fatemi told Dawn News.
His remarks came after India strongly pitched for bilateral redressal of differences with Pakistan while implementing the Indus Waters Treaty.
External Affairs Ministry Spokesperson Vikas Swarup had said on Thursday that given the will, there is no reason why the technical design parameters on which Pakistan has raised objections cannot be sorted out by experts from both sides on projects like Kishenganga.
However, Dawn reported that India's request for more time alarmed Pakistan.
More From This Section
"Islamabad argued that India used the same strategy on previous occasions, completing a project during the dispute and then insisting that since the project was already complete, it could not be modified," the report said.
The treaty, signed in 1960, gives India control over the three eastern rivers of the Indus basin -- the Beas, Ravi and Sutlej -- while Pakistan has the three western rivers -- the Indus, Chenab and Jhelum.
The IWT also sets up a mechanism, the Permanent Indus Commission, which includes a commissioner from each country.
Tensions over the water dispute increased late last month when Prime Minister Narendra Modi threatened to block the flow of waters into Pakistan, the daily said.
Both sides had already completed the process proposed in the IWT and approached the World Bank only after the commission declared it "a dispute" as required, experts were quoted as saying.
"Dragging it through an already exhausted process will not help," an expert said.
Pakistan argues that the designs of the two Indian projects violate both legal and technical provisions of the treaty. India, however, has opposed Pakistan's efforts for setting up a court of arbitration.
Earlier this week, the World Bank announced pausing of the two separate processes initiated under the IWT to allow the two countries to consider alternative ways to resolve their disagreements.