By Brazil Stock Guide – By Brazil Stock Guide – Minas Gerais published a decree on Friday (10) setting rules for municipalities to join a regionalized sanitation model, a move that could streamline contract renewals but also reshape the investment case for Copasa (CSMG3) ahead of its planned privatization.
The regulation outlines how cities can opt into regional units for water supply, sewage and waste management, following a law that set a 180-day deadline for implementation. Municipalities have until June 23 to decide whether to join, a timeline that overlaps with the state’s privatization schedule and introduces a tight execution window.
Unlike fully predefined concession structures, the model does not establish a fixed list of municipalities per regional unit. Instead, the final composition — and economic value — of each block will depend on voluntary adhesion by cities, making the asset itself still in formation.
By grouping municipalities into regional blocks, the framework allows for unified contracts instead of fragmented agreements, potentially extending concession durations and improving cash flow visibility. However, adhesion is politically driven, as municipalities weigh tariffs, governance and control, adding uncertainty to the process.
The decree also establishes a collegiate governance structure within each regional unit, introducing shared decision-making between the state and municipalities. This may limit unilateral control by operators and adds a layer of complexity to future concessions.
Minas Gerais is currently divided into three main water and sewage regions, including one dominated by Copasa, another linked to the Rio Doce basin, and a third covering 151 municipalities still operated by local governments or private players. Solid waste is organized separately into regional units.
While the framework supports Copasa’s consolidation strategy, it also creates a scalable structure that could attract private operators in future bidding processes, increasing competitive pressure. The model differs from São Paulo’s Sabesp (SBSP3) privatization, where regional structures were more clearly defined ahead of the auction.
Copasa has already secured a long-term contract in Belo Horizonte through 2073, representing roughly 30% of its revenue base. Expanding similar agreements across other municipalities would enhance revenue visibility, but remains contingent on adhesion.
The privatization auction is expected in the coming weeks or in May, leaving limited time for municipalities to opt in. Ultimately, Copasa’s valuation will depend less on the decree itself and more on how many municipalities actually join its regional unit.
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