When Rio Tinto announced in March 2026 that it had struck a 50:50 joint venture with Western Australia’s state-owned Water Corporation to build an A$1.1 billion (~US$770 million) desalination plant at Dampier, the deal attracted attention for its novelty: a mining giant, not a utility, co-investing in water infrastructure alongside a state entity. What received less notice was the structural choice embedded in the arrangement. There are no availability payments, no build-own-operate-transfer provisions, no 30-year concession to a private consortium. Rio Tinto operates the plant; Water Corporation distributes the output; both parties own the asset equally from day one. The Victorian desalination PPP at Wonthaggi, Australia’s most prominent water concession, costs the state more than A$650 million annually in availability charges regardless of how much water it actually draws. Dampier was structured to avoid that trap: shared equity, no availability payments, no guaranteed revenue stream to a private consortium.
The Dampier JV is an unusual case, a mining company rather than a government driving the push for direct ownership, but the structural instinct it reflects is no longer unusual at all. Across the Gulf and beyond, governments are increasingly treating desalination as infrastructure too critical to be held at arm's length. The mechanism varies: an explicit privatisation cancellation in Saudi Arabia, a procurement pivot in Kuwait, a bilateral state-to-state construction agreement in Iraq. But the direction is consistent enough to warrant a map.
The model that worked, and the cracks that appeared
The build-own-operate-transfer model emerged in the Gulf in the 1990s as a solution to a genuine problem. Governments needed desalination capacity quickly; private capital could fund construction without burdening sovereign balance sheets; competitive bidding would drive down tariffs. The logic was sound, and the results were substantial. Tariffs for seawater reverse osmosis fell from above $1.00 per cubic metre under thermal distillation to below $0.40 under competitive Independent Water Producer (IWP) procurement, a compression that would not have happened under a state monopoly. The private sector's role was real, and the efficiency gains were measurable.
Governments that can afford it are choosing to own desalination infrastructure directly, rather than conceding it to private developers
Yet the model carried an assumption that is now being tested: that governments would remain comfortable with private entities holding legal title to infrastructure that provides the most basic of public goods. That assumption has weakened for reasons that are partly economic and partly strategic. The security dimension sharpened considerably in 2026, when a GCC Secretariat meeting convened specifically to assess water supply preparedness amid heightened regional tensions. A contemporaneous analysis in Frontiers in Water argued that Gulf desalination investments carry a "sovereignty premium", meaning a strategic value of supply independence that consistently exceeds what economic cost-benefit analysis alone would justify. When ninety percent of Kuwait's drinking water and the majority of Gulf domestic supply flows from coastal plants, the argument for keeping those plants in state hands is not merely financial.
Mhamed Biygautane, Senior Lecturer in Public Management at the University of Melbourne and a specialist in GCC infrastructure governance, sees the shift as structural rather than cyclical. “After two decades of IWP and Independent Water and Power Producer (IWPP) concessions, GCC governments are quietly reasserting sovereign control over the strategic core of the water system,” he says. “Water is being re-classified from a tradeable utility service into a national security asset.”
There is also a structural shift in who plays the "private" role in the public-private partnership. The dominant desalination developers of the 2020s are not independent Western utilities deploying commercial capital. ACWA Power, which won or was named preferred bidder for roughly two-thirds of all GCC independent water projects in 2024, is approximately 44% owned by Saudi Arabia's Public Investment Fund. TAQA, which supplies around 85% of Abu Dhabi's power and 90% of its water, is 90% owned by Abu Dhabi Power Corporation, a government entity. When the PIF's vehicle wins a 25-year BOO contract from a Ministry of Finance-backed offtaker regulated by the Saudi Water Authority, the PPP label persists while the substance of private participation has fundamentally changed.
The map, country by country
Saudi Arabia has executed the most significant reversal. The Saline Water Conversion Corporation, operator of more than 30 desalination plants producing approximately 7.5 million cubic metres per day, part of a national total that, including private IWPs, accounts for roughly 22% of the world’s desalinated water, was earmarked for privatisation as far back as 2008. Under Vision 2030, the programme accelerated, with Cabinet formally approving the sell-off of 11 plants in September 2019. The flagship transaction was Ras Al Khair, the world’s largest hybrid facility. Seven consortia prequalified to bid for a 60% stake. Then, in July 2021, the tender was suspended. Eleven months later, the cabinet cancelled the privatisation of SWCC, ordering the transfer of all its direct and indirect assets to the PIF or any of its companies. SWCC’s governor was direct: the corporation would remain a government agency. By May 2024, SWCC had been converted into the Saudi Water Authority, not a commercial entity but the Kingdom’s central water regulator.
The dominant desalination developers of the 2020s are sovereign-aligned entities, not independent private companies, redefining what partnership means
The distribution side tells a subtler version of the same story. The National Water Company awarded six regional Management, Operation and Maintenance Contracts between 2020 and 2022, to Veolia, SUEZ, Aqualia, and Saur, with an explicit stated intention to transition them to full 25–30-year concessions. NWC's then-interim chief executive said in September 2022 that strong early performance could accelerate that transition. The third-year thresholds have now passed for several clusters. No concession has been announced. At the NWC Partners Forum in Riyadh in February 2026, Saudi minister Abdulrahman Al Fadhli presented Aqualia's country manager with the award for best Management, Operation and Maintenance Contract (MOMC), recognising the Spanish operator's performance across the Southern and Northern clusters. The ceremony encapsulates the new equilibrium: the state grades and rewards its contractors; the international operators compete to be the best-managed service provider rather than to own the assets that the original reform had promised them. Sharakat, formerly the Saudi Water Partnership Company, continues to tender new desalination capacity to private developers, but as a Ministry of Finance-owned sole offtaker that retains pricing authority and regulatory control.
Biygautane identifies three factors that determine whether a government chooses direct ownership or private participation. “Fiscal headroom: when sovereign balance sheets are strong, the appetite for off-balance-sheet PPP structures drops sharply. The perceived strategic sensitivity of the asset: desalination sits closer to defence than to electricity in the GCC mental map. And institutional learning: after twenty years of concessions, GCC procurement agencies now have the contractual sophistication and technical depth to unbundle risks themselves, so they no longer need a private partner to internalise capability they once lacked.”
Fiscal capacity, strategic sensitivity and institutional learning determine whether a government chooses sovereignty or private participation, says academic Mhamed Biygautane
Iraq presents the starkest assertion of sovereign ownership among the cases examined. The Grand Basra Seawater Desalination Project, one million cubic metres per day, reached contract signature with PowerChina in January 2026, for an EPC contract valued at 17.193 billion yuan (about $2.4 billion). The Basra Governorate owns the infrastructure outright from day one. PowerChina is a pure EPC contractor with no equity, no revenue rights, and no operational role beyond a standard defect liability period. An earlier iteration of the project, financed by UK Export Finance with an international consortium including Samsung and Biwater, was abandoned when the project was restructured and transferred to provincial control. The shift from a Western-financed PPP-style structure to a Chinese state enterprise EPC, financed from Basra's petrodollar allocations, was deliberate rather than incidental.
Kuwait’s North Kabd project is a more ambiguous case, and worth examining precisely because of that ambiguity. The KD 998 million (about $3.2 billion) contract for what will be Kuwait’s largest-ever water infrastructure was originally conceived as a public-private partnership under KAPP, the state’s dedicated PPP agency. By January 2026, that plan had been abandoned in favour of a direct contract with CSCEC, China State Construction Engineering Corporation, covering design, construction, and a ten-year operation and maintenance period. Kuwait retains full ownership from inception. It is worth noting that Kabd North is a wastewater treatment facility rather than a desalination plant; Kuwait simultaneously awarded the Az-Zour North Phase 2 and 3 IWPP to ACWA Power under a conventional PPP structure in 2025. The picture is not one of wholesale sovereignty reassertion but of selective application: PPP for power-linked desalination, direct state contracts where PPP procurement has repeatedly stalled. In over fifteen years of operation, Kuwait's PPP agency has completed only two projects.
Bahrain cuts against the thesis entirely and is more informative for it. The Electricity and Water Authority launched its first standalone independent water producer tender in late 2024: a 272,000 cubic-metres-per-day SWRO plant at Hidd, to be developed under a pure BOO contract of 20–25 years in which the private developer owns the physical asset throughout the contract term. By March 2026, only two bidders, ACWA Power and GS Inima Environment, had submitted proposals from the prequalified field. Notably, both are sovereign-aligned: ACWA Power backed by Saudi Arabia's Public Investment Fund, and GS Inima, in the process of being acquired by Abu Dhabi's TAQA. The "private" competition for Bahrain's water infrastructure is effectively a contest between Saudi and Abu Dhabi sovereign capital. The explanation is fiscal rather than philosophical. Bahrain's government debt stands at 133–142% of GDP. Its sovereign wealth fund holds roughly $17–20 billion, a fraction of Abu Dhabi's or Saudi Arabia's reserves. S&P downgraded the country to B in November 2025. Building a $500–800 million desalination plant on the sovereign balance sheet is not a strategic choice Bahrain can currently make. The BOO model converts capital expenditure into a long-term operating cost, keeping the investment off the government's books. Bahrain does not contradict the sovereignty thesis so much as it defines its boundary condition: re-sovereignisation is a trend among governments that can afford it.
What it means for operators, contractors, and investors
For Western private water companies, the structural message is increasingly clear. The developer-investor role in Gulf desalination, holding equity, bearing construction risk, earning long-term concession returns, is closing to firms without sovereign backing. It is not closing to Western firms as EPC contractors or technology providers. Leading Western operators have pivoted accordingly, competing as EPC contractors and technology providers rather than equity developers, winning construction and O&M mandates without taking ownership positions. The risk for these firms is margin compression as the EPC role commoditises and Chinese competitors bid aggressively on price.
A new commercially viable role is emerging for Western operators: competing on technology and expertise under contract to sovereign owners
TAQA's $1.2 billion agreement to acquire GS Inima, announced in 2025, may be the single most revealing transaction of the period. A sovereign entity bought a Spanish private desalination specialist to bring its capabilities in-house, simultaneously consolidating the Gulf's state-controlled platform and extending it into Spain, Brazil, Mexico, and Oman. The direction of travel is unambiguous.
For Biygautane, the implications for private operators are clear. “The era of international operators as equity-holding system integrators is closing,” he says. “The emerging model is one of specialised service providers, competing on membrane technology, energy efficiency, digitalisation, and decarbonisation, under shorter contracts and tighter performance regimes set by sovereign offtakers.” The margins, he argues, move from long-tail concession returns to technology premiums. “The winners will be operators who accept being suppliers of capability rather than owners of infrastructure; those still pitching twenty-five-year BOO structures will find the market has moved on.”
For Chinese state contractors, the current positioning is structurally advantageous in a way that transcends any particular ownership model. PowerChina describes itself as the world's largest EPC general contractor in seawater desalination. Its projects appear under ACWA Power's BOO structures in the UAE, under Iraq's sovereign EPC framework, and under Algeria's state-owned expansion programme simultaneously. Chinese state-owned enterprise (SOE) contractors have built a position where they capture value from the desalination boom regardless of who ends up holding the deed.
The question is not who builds the water
The conventional framing, governments taking back ownership, is accurate but incomplete. What the evidence from 2020 to 2026 actually shows is a more layered transformation. The GCC's PPP era, roughly 1995 to 2020, created a competitive procurement framework that achieved genuinely transformative cost reductions. That framework is not being dismantled. It is being repopulated: sovereign-aligned developers rather than independent Western capital on the equity side, Chinese state contractors on the construction side, and government entities retaining regulatory and strategic authority throughout.
Legal ownership and strategic control are not the same thing, and the most interesting cases are those that pull them apart. Bahrain controls its entire water sector, including what gets built, where, to what specifications, and at what tariff, without owning a single production asset. Iraq will own the Grand Basra plant outright, but it depends entirely on PowerChina's technology, supply chain, and engineering capacity to deliver it. Saudi Arabia owns its assets, regulates the market, and sets the KPIs for its contractors while still procuring new greenfield capacity through private developers.
The contracted operator, EPC contractor, and technology provider roles that remain are real and commercially viable, but they require a fundamental reset in how private water companies define their value, structure their pipelines, and measure success in markets where the client is, unmistakably, the state.
