Employers:

Ardabil Water and Wastewater Company
Water and Wastewater Company of Isfahan Province
Ilam Province Water and Wastewater Company
Boushehr Water and Wastewater Company
West Tehran Water and Wastewater Company
Water &Waste Water Company of Tehran
Alborz Province Water and Wastewater Company
Chaharmahal & Bakhtiyari Province Water and Wastewater
Khorasan Razavi Water and Wastewater Company
Khuzestan Water and Wastewater Company
Zanjan Water and Wastewater Company
Semnan Water and Wastewater Company
Sistan and Baluchestan Water and Wastewater Company
Fars Province Water and Wastewater Company
Qazvin Water and Wastewater Company
Qom Water and Wastewater Company
Kurdistan Province Water and Wastewater Company
Kerman Province Water and Wastewater Company
Water &Waste Water Company of Kermanshah Province
Kohgiluyeh & Boyerahmad Province Water and Wastewater
Golestan Province Water and Wastewater Company
Water &Waste Water Company of Guilan Province
Lorestan Water and Wastewater Company
Mazandaran Water and Wastewater Company
Markazi Province Water and Wastewater Company
Hormozgan Water and Wastewater Company
Hamedan Province Water and Wastewater Company
Yazd Province Water and Wastewater Company
Ahvaz Water and Wastewater Company
Shiraz Water and Wastewater Company
Kashan Water and Wastewater Company
Mashhad Water and Wastewater Company
Ardabil Regional Water Authority
isfahan Regional Water Authority
Chaharmahal Regional Water Authority
Khorasan Razavi Regional Water Authority
West Azarbaijan Industrial Estates Co.
Isfahan Industrial Estates Company
Yazd Industrial Estates Co.
Sepahan Cement Company
Najafabad Municipality
Kowsar Yazd Company
Omran Abshar Espadana Company
Esfahan Steel Company
Chadormalu mining & industrial co.
Department of tribal Affairs in Isfahan Province
Iranian holding Company Airports
International Isfahan Shahid Baheshti Airport
International shiraz Airport
National Water and Wastewater Engineering Company