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Expanding Tehran’s water supply network is facing operational hurdles.
Expanding Tehran’s water supply network is facing operational hurdles.

$318m Required for Wastewater Projects

$318m Required for Wastewater Projects

The development of wastewater treatment plants in and around Tehran requires €300 million ($318 million), said Mohammad Parvaresh, the managing director of Tehran Province Water and Wastewater Company.

"We have asked parliament to approve a €300 million loan for developing and implementing wastewater projects in all cities across Tehran Province," Parvaresh told IRNA on Monday.

Annual expenditure on wastewater treatment per capita is approximately $150, which translates into roughly $12 billion a year considering Iran's population of 80 million, according to the official.

Parvaresh also said that work on an extensive water supply project, dubbed as Tehran Water Ring, commenced in mid-2015 and will lay 180 kilometers of pipeline in an effort to connect seven water treatment facilities and ensure stable water quality and supply in the sprawling capital.

However, Parvaresh said the project faces operational hurdles, notably the difficulty in digging the ground in the capital's tangled network of wells, pipes and tunnels.

The TPWWC chief asserted that the pipeline, which will straddle around the capital, will ensure steady water supply across the metropolis "even during dry spells" as water treatment plants with higher inflow will pump the precious and dwindling resource to areas with insufficient supplies.

In the face of persistently low precipitation in the past 15 years, experts have called for greater focus on collecting, treating and reusing water for drinking and farming. 

Data show an average rainfall of 241 millimeters in the previous Iranian water year that ended in September. Though better than two water years ago, precipitation in the previous water year declined 2% compared to the long-term average.

Expansion of the wastewater infrastructure is one of the most important urban projects underway in Tehran in the past four decades, but a lack of funding plus the fast development of urban areas have impeded progress.

Nearly 3,000 water and wastewater projects nationwide are reportedly incomplete due to a lack of funds.

Parvaresh said that 26 water and wastewater treatment plants were launched in fiscal 2016-17, five of which are in and around Tehran.

Two wastewater treatment plants were launched northeast of Tehran last week. 

Approximately 10 kilometers northeast of the capital, Lavasan plant has the capacity to treat 12,000 cubic meters of effluent per day. The Lavasanat district is home to about 30,000 people, according to a 2011 census.

The second and smaller wastewater treatment unit, known as Meygoun, is built in the eponymous town 25 kilometers northeast of the capital. The plant was built in two phases with a processing capacity of 750 cubic meters per day. 

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