In Algeria, oil fields generate significant quantities of wastewater on a daily basis. These waters are often laden with hydrocarbons and heavy metals, with concentrations exceeding established standards. However, addressing this issue to prevent pollution at the Marine Terminal of Bejaia is one of the major objectives of our study. During this study, the degree of pollution in the wastewater of the Marine Terminal Center in Bejaia is assessed through the analysis of various parameters;a comprehensive diagnosis of the purge waters from the investigated site was established. Characterization tests of these waters revealed a significant and irregular pollution, both organic (hydrocarbons) and mineral (heavy metals), which could be detrimental to the receiving aquatic environment (river, sea). For these reasons, it is considered that these purge waters require prior treatment before being discharged into the sea.