Hashem Amini disclosed the figure at a press conference on Monday, saying that it accounts for 54.4% of the Iran's urban population.
He said that the wastewater treatment services are provided via 264 treatment plants across Iran.
“Expansion of the wastewater treatment network was regarded as something luxurious some years ago while it has now become an undeniable necessity,” Amini said.
The official added that 12 new facilities, including treatment plants, had been opened in Iran's wastewater sector since August 2021 when the current administrative government took office.
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