Evaluation of Coliforms in the sand of urban beaches in Rio Grande do norte (northeastern Brazil)

Abstract

Beaches are very accessible environments for the entire population when it comes to leisure. They are also very exposed to environmental variations and anthropogenic impacts, which directly affects their general quality. Therefore, the objective of the present study was to analyze the sand from three urban beaches in Rio Grande do Norte, to identify the presence or absence of bacteria from the coliform group, evaluating their relationship with the period of the year and the frequency of users. The analyses showed that the increased amount of microorganisms is influenced by the entry of fresh water (river and rainwater) into the system and the intensity of use by users. Monitoring parameters related to the microbiological quality of beaches is essential so that beach users can guarantee the safety of their leisure, as well as so that public managers can make decisions, mainly of a sanitary nature.   KEYWORDS: indicator microorganisms; coastal environments; marine pollution; urban beaches; sand quality.