Estudo comparativo da qualidade da água dos Rios Amazonas, Tapajós, Negro e Tocantins

Abstract

The water quality of the Amazonian rivers has great worldwide visibility. The general objective of this study was to compare the water quality diagnoses of the Amazonas, Tapajós, Negro and Tocantins rivers using the thermotolerant coliform indicator (CTT), through bibliographic research, calculation of means, results of the analysis of the beaches of Fazendinha / Macapá-AP, Maracanã / Santarém-PA, Açutuba / Iranduba- AM and Porto Real / Porto Nacional-TO. I obtained as best result per point were the beaches of Fazendinha and Porto Real and the result less satisfactory was the beach of Açutuba. In the results per week, it was observed that the beaches of Fazendinha and Porto real maintained their levels of contamination practically stable. The highest peaks of contamination were in Açutuba, third week and Maracanã, second and fourth week, these changes are directly linked to the periods that the collections were made, considering the seasonality of the region.