Overall Health Index
Biological Oxygen Demand
Dissolved Inorganic Nitrogen
How healthy is your
Guanabara Bay Report Card
Overall Guanabara Bay has poor health, especially in the west and northeastern Bay.
Overall Guanabara Basin has poor health, which is almost failing. Failing grades predominate around the western and eastern regions, with some moderate scores in the Guapimirim-Macacu region.
The differences between areas of the Basin are distinguished by development pressure around the cities, resulting in poorer water quality, and significant changes to the landscape.
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