Sanitation Conditions and Water and Socio-Environmental Quality of the Lagoon in Pituaçu Metropolitan Park, Salvador, Bahia, Brazil

• DOI: https://doi.org/10.22533/at.ed.153222529047

• Palavras-chave: Ethics and Fundamental Rights; Land Use and Nature Conservation; Water Quality; Atlantic Forest; Multivariate Analysis.

• Keywords: Ethics and Fundamental Rights; Land Use and Nature Conservation; Water Quality; Atlantic Forest; Multivariate Analysis.

• Abstract:

  The socio-ecological and environmental conservation of inland lakes and reservoirs ensures the multiple uses of these freshwater ecosystems, such as water supply, education, scientific research, fishing, and recreation. This research aims to investigate the variability of water quality in Pituaçu Lagoon (2014 to 2016), associated with the remnants of the Atlantic Forest, in the environmental context of Pituaçu Metropolitan Park, Salvador, Bahia, Brazil, through geochemical, microbiological, and multivariate analyses. Cluster analysis was applied to assess the variability of geochemical variables (pH, turbidity, STD, OD, BOD(5) ,SO(4) (2-) ,Cl(-) ), nutrients (Total P, N-NH (-) ,N-NO (-) )of
  thermotolerant coliforms in water samples from Pituaçu Lagoon. Multivariate analysis allowed the identification of ecological groups based on these geochemical and microbiological variables, revealing that the greatest loss of water quality occurred in samples collected at the point of contact between the lagoon and the Pituaçu River, identifying one of the sources of pollution. In addition, the relationships between water quality loss, land use, and basic sanitation failures in the Rio das Pedras-Pituaçu River Basin, Salvador, Bahia, were highlighted.