Teams prepare bids for Riyadh East sewage treatment plant

8 May 2026

 

At least six consortiums are preparing to submit bids for Saudi Arabia's Riyadh East independent sewage treatment plant (ISTP) project, according to sources.

The project will be developed under a build‑own‑operate‑transfer model with a 25‑year concession term.

The plant will have a treatment capacity of 200,000 cubic metres a day (cm/d) in its first phase, expanding to 500,000 cm/d in the second phase.

MEED understands that the following consortiums are in discussions to submit bids for the project, which has a recently extended bid submission deadline of 30 June:

  • Suez (France) / Civil Works Company (Saudi Arabia) / Alwael (Saudi Arabia)
  • Saur (France) / Samsung E&A (South Korea) / Al-Bawani (Saudi Arabia) / Nesma (Saudi Arabia)
  • Alkhorayef (Saudi Arabia) / GS Inima (Spain)
  • EtihadWE (UAE) / Metito (UAE)
  • Veolia (France) / AlJomaih Energy & Water (Saudi Arabia)
  • Miahona (Saudi Arabia) / Marafiq  (Saudi Arabia)

In December 2025, a group comprising Metito, EtihadWE and SkyBridge was selected as the preferred bidder for the Hadda ISTP project. Miahona, Marafiq Company and Buhur for Investment was selected as the reserved bidder.

That same month, the Miahona-led consortium was selected as preferred bidder for the Arana ISTP and the Metito-led consortium was selected as the reserved bidder. Both projects have yet to reach financial close.

The Riyadh East, Hadda and Arana ISTPs are being undertaken by state water offtaker Sharakat, formerly Saudi Water Partnership Company, in collaboration with the National Centre for Privatisation & PPP.

In 2024, Sharakat prequalified 53 companies that could bid for the Riyadh East ISTP, part of seven planned ISTP projects it said it would procure between 2024 and 2026. The request for proposals was issued last October. 

WSP is the technical adviser and KPMG Middle East is the lead and financial adviser on the project.

The targeted commercial operation date for the facility is 2029.

ISTP plans

According to Sharakat’s recent seven-year statement, it has identified six additional large ISTPs in the development pipeline.

These are:

  • Kharj (75,000 cm/d)
  • Abu Arish (50,000 cm/d)
  • Hafar Al-Batin (100,000 cm/d)
  • Riyadh North (TBD)
  • Najran South (50,000 cm/d)
  • Khamis Mushait (50,000 cm/d)

The company is also pursuing a nationwide small sewage treatment plant programme covering about 139 smaller ISTPs grouped into seven clusters.

These are designed to add about 521,450 cm/d of additional treatment capacity across the kingdom.


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Mark Dowdall
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