The Aquapolo reuse plant from Cia de Saneamento Básico - industrial water on a massive scale

Reviewed: ad hoc news Classics & Longseller desk. Edited and checked on 2026-06-28, 06:22. Details in the imprint.

The Aquapolo reuse plant from Cia de Saneamento Básico sits low in the industrial landscape outside São Paulo, a maze of pipes, basins and quiet humming pumps turning grey effluent into clear, odorless process water. Workers describe the treated water as looking like a pale-blue sheet in the morning sun, calm but undeniably engineered.

What Aquapolo actually does

At its core, Aquapolo is a large-scale industrial water reuse project that takes treated sewage from a main wastewater plant and polishes it further for factories that do not need drinking-quality water. The plant supplies roughly 1 million cubic meters of reclaimed water per month, enough to cover much of the demand in the local petrochemical hub.

This volume allows industries to switch away from potable water, which remains reserved for households and more sensitive uses. In everyday operation, that means fewer drinking-water pumps running hard during dry spells because pipes to industrial clients are fed with reuse water from Aquapolo instead.

How the plant is built up

The process chain inside Aquapolo is deliberately modular. After conventional biological treatment, the water runs through additional filtration stages, chemical conditioning and disinfection, with pressure-driven systems that push the liquid through membranes to strip out remaining solids and many dissolved contaminants.

Operators talk about monitoring the whole flow like a heartbeat, with flow meters clicking, valves opening and closing and control screens glowing in a tidy control room. When the system is in balance, the output feels consistent to the touch, with a smooth, almost silky flow compared with the raw, turbulent mixture entering the first tanks.

Everyday operation and users

For engineers at nearby chemical plants, Aquapolo’s water is a practical feedstock. It runs in cooling towers, washing systems and certain production processes where ultra-high purity is unnecessary, but reliability and predictable chemistry matter a lot. Pressure and temperature are kept in ranges that fit existing equipment, avoiding costly retrofits.

In practice, that means a control engineer hears the constant rush of water through overhead lines and sees clean, pale flows in sampling jars, without the earthy smell that raw effluent carries. One plant manager, often cited in trade discussions, calls Aquapolo a quiet backbone project that lets factories grow without squeezing the city’s taps.

Environmental and drought context

Aquapolo gained wider attention during São Paulo’s severe drought earlier in the last decade, when the region’s reservoirs dropped visibly and water rationing loomed. Reuse projects like this one were presented as part of a long-term response to a sobering combination of climate stress and urban growth.

The core idea is simple: every cubic meter of reuse water sent to an industrial client is a cubic meter left in the drinking-water system. That reduces the draw on upstream reservoirs and can delay the need for new dams or major transfer schemes, which are expensive and politically sensitive.

How it fits Sabesp’s strategy

For Cia de Saneamento Básico, Aquapolo is more than a single plant. It signals a move toward more diversified water services, including bespoke industrial contracts and advanced wastewater projects that exceed the minimum regulatory standards. These segments often carry longer-term contracts and more predictable cash flows.

Chief executive André Salcedo has highlighted such infrastructure projects in recent communications as part of a consistent plan to strengthen resilience and service quality in the São Paulo metropolitan region. In internal presentations, Aquapolo frequently appears alongside new sewage collection programs and network upgrades as part of the same portfolio.

Stock and listing context

All told, projects like Aquapolo feed into how investors look at the company’s regulated asset base and future earnings. The Cia de Saneamento Básico share price is primarily guided by its listing on the São Paulo stock exchange and its New York-traded shares under ISIN US20441B1044.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.

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