A total of 21companies, including 10 Saudi companies, expressed their interest in The Al-Ahsa Eastern & Province project ISWR as follows:
- AAW & PARTNERS .
- Abdul Aziz Al Ajlan Sons Co. for Commercial & Real Estate Investment – Ajlan & Bros.
- Alfanar Co.
- Alghanim International General Trading and Contracting Co. W.L.L.
- Alkhorayef Water and Power Technologies Company.
- Al Rajhi Holding Group.
- ARKOIL Technologies Nederland B.V.
- Carpi Tech.
- CHINA HARBOUR ENGINEERING COMPANY LTD.
- Civil Works Company Ltd.
- Contrax International DMCC.
- Gulf Investment Corporation.
- Marubeni Corporation.
- Metito Utilities Limited.
- Mowah Co.
- Mutlaq Al-Ghowairi Company (MGC).
- Nesma Co. Ltd.
- Orascom Construction (OC).
- TECTON Engineering & Construction Saudi Contracting Company.
- Thabat Construction Company Ltd.
- Vision International Investment Company.