Water volume in the dams in Tehran Province has declined by 24 percent compared to the same time last year. The Ministry of Power announced that the water reserves in Tehran dams have fallen to 601 million cubic metres, which indicates a decline of 188 million cubic metres from last year.

Water entering the dams has also fallen by 19 percent, the report adds.

A rise in water consumption and a decline in precipitation has reduced water reserves in the Iranian capital to their lowest levels in the past four decades.

The head of the Tehran Province water and sewage company reports a 2.4-percent increase in water consumption in the past two months, adding that the company is looking at acquiring licences to shut down water to heavy consumers.

Many environmental activists have warned that drinking water in the capital will soon reach the same critical situation as air pollution, spiraling out of control.