Águas de Araçoiaba

On December 1, 2009, Águas de Araçoiaba was tasked with supplying water and treating the wastewater produced in the city of Araçoiaba da Serra, in the state of São Paulo.

At that time, only 15% of the population had their wastewater treated and the water supply system had a flow rate of 70 liters per second (l/s).

Today, 95% of the population has access to treated water, and 40% of the wastewater is treated.

To date, a number of improvements have been done to the water treatment plant that treats 10.5 million liters per day, and to the wastewater treatment plant, which processes 1.8 million liters per day.

One of the highlights of the utility is the socio-environmental program EcoÓleo, a collaboration with the local government that promotes the proper destination of cooking oil to avoid disposal in the environment. To the same end, the company runs an environmental awareness program in local schools.

Over 30 years of concession, the company plans to invest more than BRL 30 million in the city, and BRL 13 million of these were pledged in the first five years.

Águas de Araçoiaba plans to build a new water catchment station, new wastewater treatment plants, and it also plans to expand water and wastewater pipelines and water mains.

  • Concession date: 01/12/2009
  • City: Araçoiaba da Serra (São Paulo)
  • Population served: 31,321 people
  • Water Treatment Plant: 1
  • Number of water connections: 12,397 connections
  • Number of units with water connection: 14,130 units
  • Sewage Treatment Plant: 1
  • Number of sewage connections: 3,470 connections
  • Number of units with sewage connection: 3,720 units


Águas de Araçoiaba was tasked with supplying water and treating the wastewater produced in the city of Araçoiaba da Serra, in the state of São Paulo on December 1, 2009. In less than two months, the company had managed to increase the flow of treated water from 75 to 100 liters per second. This was possible through interventions done to the catchment facilities and to the water treatment plant.

It also put the well located at the end of Osório Rosa Street back to work so it could sort out the ongoing issue of water shortage in the Alvorada suburb. Besides this, the utility company developed studies to improve the water and wastewater systems in 2010, in line with the concession agreement.


This year, the company’s main accomplishments include solving the ongoing problem of water shortage in areas that were already being served, and cleaning and renovating the Vacariú Sewage Treatment Plant.

To increase water production, the Piraporão Catchment Facility was enlarged, and both the Flora (7 liters per second) and the Araçoiabinha (3 liters per second) wells were put back to into operation. In this first year of operations, the utility achieved 83% of treated water services provided to the city.


To contain the dam, a gabion containment system was built on the banks of the Pirapora River. A gabion is a steel basket filled with pebbles or gravel. In the same place, the untreated water pumping manifold, the motor pump assembly, and the electronic control panel devices were replaced, increasing the water catchment capacity by 45%.

The water company also built the Suíço Reservoir, increasing its water reserve capacity by 500 cubic meters and benefiting 900 households. A water treatment system using filters was also implemented in the São Conrado well, increasing water supply by 25 cubic meters per hour. Since it was commissioned to provide sanitation services, the company put in over 16,000 meters of water pipelines, adding quality of life to the local people.


One of the main projects completed that year was the construction of the Tonelli reservoir, which can take up to 1,300 cubic meters of water.

The standpipe reservoir of Araçoiabinha and the fourth module of the Jundiaquara Water Treatment Plant were also put in place. The laboratory that analyzes the quality of the water supplied in the city underwent extensive renovations and upgrades.

In three years of concession, more than 17,000 meters of water pipelines were built in the city.


In that year, the company started the replacement of the Vacariú Sewage Treatment Plant (WWTP) trunk sewer. By the time the construction work is completed, about two thousand meters of pipeline will have been replaced to carry 75 liters per second of wastewater to be sent to treatment.

To add to the system operation, a wastewater pumping station is being built at the site. The new trunk sewer and the sewage pumping station will be useful to the city center areas, and to the suburbs of Jardim Planalto, Nova Araçoiaba, Jardim Ercília, Alcides Vieira , Maria Paula Expósito, CDHUD, Maria da Glória, Santa Cruz, Jardim Novo Horizonte, walled communities Lago da Serra, Green Gold and Evidence.


The company now supplies treated water to the suburbs of Vale Verde and Colégio Velho. The Jundiaquara WTP, which supplies water to 80% of the population, underwent a few improvements and, today it is one of the few plants in the state of São Paulo to have zero water waste in its system.

Águas de Araçoiaba completed works to the Vacariú Wastewater Pumping Plant and powered up the Vacariú WWTP. With the completion of these jobs, all wastewater collected is sent to treatment through a pumping system.


Several suburbs of Araçoiaba da Serra are supplied with properly treated tap water. The communities that are benefiting from these services include those living in Retiro, Fazenda D’Oeste III, and Village Ipanema II. In Retiro, 6 km away from the city, the company drilled a well.

In the wastewater system, Águas de Araçoiaba replaced the third phase of the Vacariú creek trunk sewer. At that stage, 670 meters of new wastewater pipes were laid. A section of the pipeline was laid in the crossing of the town’s main avenue, the Manoel Vieira Avenue, using the non-destructive method.

The population also received a new trunk sewer that was built in Jardim Salete. With an investment in excess of BRL 500,000, the construction projects increased the local wastewater treatment levels. At the Vacariú WWTP, a video-monitoring system was implemented to improve site safety.


In the wastewater system, replacement of the Vacariú creek trunk sewer was completed and a Wastewater Pumping Station was installed near the Vacariú WWTP. The following areas reaped the benefits of these projects: the city center, and the suburbs of Jardim Nogueira, Jardim Flora, Nova Araçoiaba, Maria da Gloria, CDHU I, CDHU II e CDHU III, Jardim Novo Horizonte, Jardim Ercilia, Jardim San Conrado, Jardim Laura, Portal de Araçoiaba, Jardim Planalto, Lagoinha, walled communities Lago da Serra and Evidence. The households from Jardim Salete and Jardim Santa Cruz were supplied with wastewater treatment and the waste is sent to the Vacariú WWTP. The utility installed a mechanical screen at the Vacariú WWTP, which retains and removes solids from preliminary treatment to give better support to the initial treatment stage.

In the supply system, the Rua Lourenço alley, the only one in the Jundiacanga suburb not supplied with treated water, was interconnected to the pipeline. The Jundiaquara WTP was furnished with a centrifugal settler to remove water from sludge, which comes out with an average solids content of around 35%.


Five aerators were installed at the Vacariú WWTP. These devices increase the organic degradation capacity, resulting in higher system efficiency.  

The company set up the Operational Control Center in a specific room to do the video monitoring of its water catchment units, reservoirs and wells. From the control center, the supply system is monitored in real time. Automated pumps can be switched on remotely.

This year, Águas de Araçoiaba has executed about 350,000 jobs.

The utility company Águas de Araçoiaba supplies the city of Araçoiaba da Serra with water treatment, following the highest quality standards. The Jundiaquara WTP currently treats 110 l/s. Araçoiaba da Serra has five wells: Flora Well, San Conrado Well, Alto do Cercado Well, Araçoiabinha and Portão Grande.

Learn a little more about the Jundiaquara WTP:

Jundiaquara WTP

  • Located in: Estrada Dr. Celso Charuri, 100
  • Treatment Capacity: 110 l/s
  • Population:100%
  • Suburbs served: 81
  • Treatment Type: Conventional treatment

Water catchment: Superficial

The utility Águas de Araçoiaba, through the Vacariú WWTP, receives 22 l/s of wastewater and treats 100% of what is collected in the city.

The Vacariú Wastewater Treatment Plant (WWTP) is made up of an anaerobic lagoon (3 to 5 meters of depth) and a facultative lagoon (1.5 to 3 meters of depth).

Learn more about this plant by clicking below:

Vacariú WWTP

  • Located in: Fazenda Alcoléa
  • Treatment Capacity: 40 l/s
  • Population: 40% of inhabitants
  • Suburbs served: 22
  • Treatment Type: Australian System (Screening, Anaerobic Lagoon and Facultative Lagoon)