The Argentine government officially announced on Thursday that a consortium of Argentine, Brazilian, and Dutch firms has successfully acquired a 90% stake in Agua y Saneamientos Argentinos (AySA), the country’s premier public water and sanitation utility company. The winning bid, secured through a competitive public tender process, totaled US$340 million.
This landmark agreement marks a definitive turning point for the utility, which provides essential running water and sewage services to approximately 14 million residents across the sprawling Buenos Aires Metropolitan Area. With this transaction, AySA is officially set to return to private management after two decades under state control.
The roots of the company’s public administration trace back to 2006, when then-President Néstor Kirchner decided to rescind the operational contract held by the French multinational group Suez. Suez had originally taken over the utility during the widespread privatizations of the 1990s, operating under the name Aguas Argentinas starting in 1993.
Under the terms of the newly finalized agreement, the current concession contract is established for an initial period of 30 years, with a built-in provision allowing for an extension of an additional decade. According to the timeline outlined by officials, the official signing of the contract is scheduled to take place before the conclusion of the year. Subsequently, the new private operator is expected to assume full, operational control of the utility sometime between January and February 2027, initiating a new era for water management in the metropolitan region.
The Price and Financial Context
The winning bid of US$340 million presented a notable financial dynamic during the tender process. Although the consortium’s offer successfully outpaced the bid of the other remaining finalist by nearly 20%, the final figure falls significantly short of the ambitious projections laid out by the Ministry of Economy, which had initially anticipated securing up to US$500 million from the sale.
Despite this shortfall against initial expectations, the transaction stands as one of the most significant privatizations executed under the current administration of President Javier Milei. Furthermore, it ranks as the most financially beneficial to the libertarian government in terms of direct state revenue.
To contextualize the scale and structure of the administration’s privatization efforts, the largest asset sale to date involved the transfer of a 70% stake in the natural gas provider Metrogas to the power company Edenor, fetching a substantial US$780 million. However, because those proceeds belonged primarily to the state-backed oil company YPF—which acted as the majority shareholder of Metrogas—the direct financial windfall for the national treasury differed significantly. In contrast, the sale of AySA represents a transaction where the state receives the entirety of the proceeds directly.
In a public announcement shared via social media to detail the results of the tender, the Ministry of Economy delivered a sharp critique of the utility’s historical performance under state management. The ministry characterized AySA as a "model of administrative dysfunction," asserting that the public company required continuous treasury transfers exceeding US$13.4 billion between the years 2006 and 2023.
The ministry further argued that despite receiving massive infusions of public funding over nearly two decades, critical infrastructure gaps persisted. Specifically, officials noted that approximately one-third of the designated concession area still lacks reliable access to safe drinking water and basic sewage networks, underscoring the government’s primary justification for returning the utility to the private sector.
The New Water Managers in Buenos Aires
The winning consortium that secured the historic tender is spearheaded by Rowing SA, a prominent Argentine engineering firm bringing more than three decades of hands-on experience in complex infrastructure and public works projects throughout the country.
The consortium also includes another key local player, Transclor SA. Having operated in the Argentine market since 2009, Transclor has served as the exclusive supplier of aluminum polychloride, a critical chemical compound utilized daily by AySA for water purification processes.
International expertise within the group is anchored by the Brazilian company Arcos Saneamento e Participações, which operates as a division of the well-established Equipav Group. Arcos brings substantial operational pedigree to the partnership, having managed municipal water and sewage services since 2010. The firm currently oversees utility operations serving more than 39 million people spread across 15 different Brazilian states.
Rounding out the international coalition is the Dutch firm PHX Aqua AR B.V., headquartered in the Netherlands, which brings additional corporate governance and strategic oversight to the venture.
Beyond the initial acquisition price of US$340 million, the terms of the tender obligate the winning consortium to commit staggering levels of capital expenditure. The operators must invest US$1.9 billion over the first five years alone, followed by a cumulative investment commitment of US$15 billion across the entire lifespan of the 30-year concession, which is set to expire in 2056.
The performance benchmarks established for the first decade of private operation outline steady, incremental improvements to regional infrastructure. Projections indicate that overall water coverage within the metropolitan area will increase from its current baseline of 75% to 79%. Simultaneously, sewage coverage is targeted to rise from 64% to 65% over the same foundational period.
In parallel with the privatization process, regulatory adjustments are already underway. The water and sanitation regulatory agency, known as ERAS, officially called for a public hearing scheduled for October 26. The primary objective of this hearing is to evaluate and implement an update to AySA’s utility pricing structure.
Data compiled by a public university observatory focusing on utility bill pricing indicates that the average water bill—calculated without state subsidies—in the Buenos Aires metropolitan area hovered around AR$43,000, equivalent to approximately US$26 at the official exchange rate, as of August 2026.
Recent operational projections released by AySA suggest that the upcoming tariff adjustments will impact residential users unevenly. Approximately 60% of residential customers are projected to experience an average rate increase of 22%. Meanwhile, another 20% of users are expected to see their bills remain completely unchanged. Finally, the remaining 20% of households are projected to receive an average price reduction of 15% under the recalibrated tariff scheme.
