SWPC tenders Riyadh East sewage treatment plant

7 October 2025

State water offtaker Saudi Water Partnership Company (SWPC) has issued a request for proposals (RFP) for the Riyadh East independent sewage treatment plant (ISTP).

The project will be developed under a build‑own‑operate‑transfer (BOOT) 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 400,000 cm/d in the second phase.

It includes the development of a treated sewage effluent transmission pipeline, forming part of the kingdom’s wider programme to expand wastewater treatment capacity through public-private partnerships.

The targeted commercial operation date for the facility is 2029.

Recent tenders by SWPC have included ISTPs in Jeddah, Taif and Buraidah as part of the government’s drive to increase private sector participation in the utilities sector.

The Riyadh East ISTP is one of seven ISTP schemes that SWPC said it would procure between 2024 and 2026.

In November 2024, SWPC prequalified 53 companies that can bid for the seven planned ISTP projects and 41 for the independent water projects (IWPs).

The five IWPs have a total combined capacity of 1.7 million cm/d. The seven ISTP projects have a total combined capacity of 700,000 cm/d.

In September, SWPC received three bids from the private sector for the development of the Riyadh-Qassim independent water transmission pipeline project.

The project will have a transmission capacity of 685,000 cm/d. It will include a pipeline length of 859 kilometres and a total storage capacity of 1.59 million cubic metres.

SWPC also recently announced its preferred bidder for the Jizan cluster small sewage treatment plants and collection network project.

The $150m scheme involves the construction of 12 sewage treatment plants across the Jizan region in the southwest of the kingdom, with a combined treatment capacity of 74,700 cm/d.


READ THE OCTOBER 2025 MEED BUSINESS REVIEW – click here to view PDF

Private sector takes on expanded role; Riyadh shifts towards strategic expenditure; MEED’s 2025 power developer ranking

Distributed to senior decision-makers in the region and around the world, the October 2025 edition of MEED Business Review includes:

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Mark Dowdall
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