Pollution From Sewage Discharges And Their Potential Environmental Risks In Marine Waters In Colombiana

Abstract

The objective of this study was to evaluate the physicochemical and microbiological quality of wastewater discharged into the ocean from the municipality of San Bernardo del Viento, department of Córdoba. Water samples were collected in five time periods distributed every 15 days. The parameters evaluated were: physicochemical parameters (pH, turbidity, total solids, BOD, COD and NO3) and microbiological parameters (concentration of Escherichia coli and total coliforms). The results show a high concentration of Escherichia coli (5.3 x 10^-3 CFU/ 100 mL), total coliforms (5.9 x 10⁵ CFU/ 100 mL) and organic load represented in total solids (530 mg/L) and nitrates (12.91 mg N-NO₃/L), as well as high turbidity (27.5 UPS), BOD5 (410.5 mg O₂/L) and COD (267 mg O₂/L). The results of the parameters evaluated in the area under study show contamination values above the permitted values according to The results of the parameters evaluated in the area under study show contamination values above the permitted values according to Resolution 883 of 2018 complements the current regulations for the control of water pollution established in the Sole Regulatory Decree of the Environment and Sustainable Development Sector (Decree 1076 of 2015).