Saudi Water PPP Projects: Desalination and Wastewater Investment Case to 2030

For investors looking at Saudi water PPP projects, the contract approach matters as much as the demand story. SWCC and the Saudi Water Authority are described as running a rolling programme of independent water producer procurements, using BOO or BOOT concessions with 25 to 30-year water purchase agreements. These structures are positioned as providing revenue certainty through government offtake obligations. The same sources describe demand growth pressures from population growth, urbanisation, and industrial development, expanding water demand at around 3% to 4% annually. Cumulative water sector investment requirements through 2030 are estimated at SAR 80 to 100 billion, framing the scale of the opportunity.

Desalination, Transmission, and Wastewater: What the Pipeline Signals

Several public references illustrate how procurement is extending beyond desalination into networks and sewage treatment. More than 40 PPP projects have been announced, spanning desalination plants, wastewater treatment plants, and strategic water reservoirs. In October 2024, eight new projects valued at $8 billion were announced as due to be awarded over the next 12 months, signalling SWPC’s intention to sustain a delivery pipeline. On wastewater, SWPC issued RFP documents for two independent sewage treatment plants in Makkah, Hadda and Arana, with delivery via a build, own, operate, and transfer model and an expectation of being operational by 2028. Earlier, the Madinah 3, Buraydah 2, and Tabuk 2 ISTPs were cited as high-profile foreign investment examples, with a combined value in excess of $700 million and financial close in 2022.

Other sources highlight additional scale markers across desalination and transmission. Citing the 2025 Saudi Vision 2030 Annual Report, investment across Saudi Arabia’s water value chain has exceeded $64 billion, including more than $56 billion from the private sector. The same reference states desalination production capacity of more than 16 million cubic meters per day supported by over 40 seawater desalination plants. On privately developed desalination capacity, Jubail 3B is cited at 570,000 cubic metres per day. In transmission, SWPC received three private-sector bids in September 2025 for the Riyadh-Qassim Independent Water Transmission Pipeline project, and the planned Jubail-Buraydah pipeline is described as designed to transport up to 650,000 cubic metres per day across 603 km.

Through 2030, the investment case also rests on clear performance targets and growth segments, especially wastewater treatment and reuse. Vision 2030’s National Water Strategy sets targets that include increasing wastewater treatment and reuse rates to 90% and reducing non-revenue water losses to a globally competitive 15%, alongside maintaining desalination capacity sufficient to meet growing demand. Wastewater is described as a high-growth segment, and broader sector commentary links growth to policy support, infrastructure investment, and public-private partnerships. With a Water Law enacted in July 2020 to regulate water usage and empower comprehensive water management planning, investors can map opportunities across long-term offtake-backed desalination, BOOT sewage treatment concessions, and expanding transmission infrastructure.