Our priority is to carry out actions aimed at recovering the area impacted by the collapse of Dam B1, in Brumadinho.
To this end, we remain committed to carrying out actions to monitor local biodiversity, such as water, soil and animals, in addition to carrying out activities aimed at the revegetation of affected areas.
Explore the studied area
Discover our areas of activity:
Recovery of plant species
Fotógrafo: Ricardo Teles
Paraopeba river water quality
The restoration of the Paraopeba River is one of the main commitments of our environmental reparation work.
Discover all the monitoring points that exist today
How is monitoring done?
Conventional monitoring is carried out by sampling surface water in several sections of the Paraopeba River and in main tributaries, at frequencies that vary between weekly and monthly. Samples of sediment deposited on the riverbeds are also collected.
The collected samples are sent to specialized laboratories for analysis of physical, chemical and biological parameters, totaling more than 150 variables. Following validated analytical methods, it is possible to identify changes in the quality of water, sediments and local ecosystems.
Automatic monitoring is also performed to obtain water quality data. Overall, 11 telemetric stations are set up on the Paraopeba River, which allow the remote measurement of physical and chemical parameters of the water, hourly, with data transmission via satellite, increasing information efficiency.
The work carried out is validated and monitored by supervisory bodies and national and international educational institutions: Coppe-UFRJ, UFMG, UFLA, IFTM, UNESP, University of Illinois (USA) and University of Trás-Os-Montes and Alto Douro (Portugal).
What are the results obtained so far?
- Since May 2019, the Paraopeba River has not received tailings loading;
- The tailings did not reach the São Francisco River. The impacts on water quality were identified up to the limit with the Retiro Baixo Hydroelectric Power Plant, in Pompéu (MG);
- No impacts were detected on the waters of the Três Marias Hydroelectric Power Plant reservoir, as demonstrated in studies by environmental agencies;
- The turbidity levels and the total metals, Manganese, Iron and Aluminum, are progressively reducing during the dry period, and statistical trend tests prove an improvement in the water quality of the affected regions.
Monitoring in numbers
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About 90 monitoring points.
14 telemetric stations installed for continuous monitoring.
6.5 million results from water, soil and sediment.
More than 53,000 samples collected.
About 250 professionals involved in this process.
Photographer: Ricardo Teles
After the collapse of Dam B1, in Brumadinho, the use of water from the Paraopeba River was interrupted and Vale assumed a commitment, together with the competent public bodies, to ensure the water supply of all affected municipalities.
So far, Vale has provided a flow rate of:
Volume of mineral water supplied to communities
Volume of water made available by drilled wells
In a total of:
Photographer: Vale's Archive
Discover the actions being carried out
Do you want more information about the public supply schedule via water trucks?
The data obtained from the monitoring works is periodically delivered to inspection agencies and to the Public Presecution Office of Minas Gerais.