Brazil’s New Sanitation Framework, approved in 2020, pulled the sector out of stagnation, set ambitious targets, energized the market and turned water and sewage services into one of the country’s largest infrastructure and investment agendas. But the promise that private capital would provide an almost automatic solution is starting to hit its limits.
The market appears to be signaling that there is not enough capital — nor capital cheap enough — to buy into every project simply because it carries the promise of universal service.
The risk now is the emergence of a two-speed sanitation market. On one side are assets with scale, stronger urban bases, greater fiscal capacity and a return story that is easier to underwrite. On the other are concessions and public-private partnerships in less-developed states, where initial coverage is low, geography is dispersed, household income is weaker, delinquency risk is higher and the ability to attract investors is more limited.
Copasa’s recent privatization showed that capital is still available when the asset is large, familiar and operationally manageable. Equatorial paid R$5.5 billion to acquire a 30% stake in the Minas Gerais-based water utility. It was not an exuberant auction — there was only one bidder — but there was money on the table.
Universaliza-SP follows a similar logic. São Paulo is trying to structure the concession of water and sewage services in municipalities not served by Sabesp, in a project that could involve around R$100 billion in investments through 2060. When there is economic density, fiscal capacity and some degree of public support, the project can still speak to investor demand.
Outside that axis, the conversation has become harder. Saneago’s sewage PPP in Goiás was canceled after two blocks received no bids and the only proposal submitted was disqualified. Ceará reinforced the warning. The state had expected to attract R$7 billion in investments for sewage services across 128 municipalities, divided into five lots. In the end, it received a bid for only one lot, covering 23 cities, with a discount of just 1.15%. Four lots received no offers.
That is the central point. Brazil’s sanitation framework created a national target: 99% of the population with access to water and 90% with sewage collection and treatment by 2033. But private capital does not operate on legal targets. It operates on risk, return, financing, tariffs, delinquency, regulatory capacity and execution. The law can mandate universal access; it cannot force investors to accept a poorly calibrated contract.
Rondônia will be the next test of that thesis. The state has launched a regionalized water and sewage concession covering 40 municipalities, with an estimated contract value of R$8.48 billion and an auction scheduled for September 29 at B3, Brazil’s stock exchange. The project has scale, includes the state capital Porto Velho and comes with the BNDES stamp. But it also carries the typical challenge of Brazil’s new sanitation frontier: low initial coverage, territorial dispersion and heavy execution needs.
Rondônia’s own reference business plan shows the size of the mountain ahead. The concession area starts with projected coverage of 51% in water and just 15% in sewage, rising linearly toward the 2033 targets of 99% and 90%, respectively. The leap is enormous. The question is whether the market will buy the risk.
The issue is not that investors have abandoned sanitation. It is that they have become more selective. And that selectivity carries an uncomfortable political consequence: the places that need investment the most are often the ones where returns are hardest to deliver. Universal access may advance faster where income is higher, regulation is more mature and contracts are easier to finance. Where the need is greater, capital may simply fail to show up.
This does not invalidate Brazil’s sanitation framework. Quite the opposite. The framework was the sector’s most important institutional advance in decades. But the first phase, marked by major auctions and private-sector enthusiasm, has given way to a more difficult stage: execution, model revision and the uncomfortable question of who gets left behind when the contract does not close.
Without well-designed subsidies, more balanced concession blocks, credible public guarantees and returns that properly reflect risk, universal sanitation may become an unequal promise: faster for large urban centers, slower for everyone else.