Water levels at the dam reservoirs supplying Iran’s north-eastern city of Mashhad have plunged below 3%, according to reports, as the country suffers from severe water shortages.

“The water storage in Mashhad’s dams has now fallen to less than 3%,” Hossein Esmaeilian, the chief executive of the water company in Iran’s second largest city by population, told the ISNA news agency.

He added: “The current situation shows that managing water use is no longer merely a recommendation – it has become a necessity.”

Mashhad, home to around 4 million people and Iran’s holiest city, relies on four dams for its water supply. Esmaeilian said consumption in the city had reached about “8,000 litres per second, of which about 1,000 to 1,500 litres per second is supplied from the dams”.

Authorities in Tehran warned over the weekend of possible rolling cuts to water supplies in the capital amid what officials call the worst drought in decades. The Iranian president, Masoud Pezeshkian, has cautioned that without rainfall before winter, even Tehran could face evacuation.