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This study proposes to follow the temporal evolution of nitrate in groundwater and map their spatial
distribution. Nitrate levels observed in the waters of the city of Abidjan differ from one aquifer to another.
Indeed, the waters on the Quaternary contain high values of nitrate, with grades ranging from 0.05 mg /
L to 196.20 mg / L, with an average of 49.42 mg / L. These levels are higher than the WHO standard (50
mg / L) for drinking water. The water of the Continental Terminal (CT) has nitrate levels range from 0 to
120 mg / L, with an average of 13.07 mg / L. In the Continental Terminal, excessive nitrate levels are
observed in the areas of Plateau, Adjamé and Yopougon West Zone. The spatial distribution of nitrate in
the waters of the quaternary layer shows that the majority of catchments of this sheet is subject to nitrate
pollution. This study shows that in the waters of the Continental Terminal water, the nitrate pollution
along two major outbreaks. The first area is South-North, which means to Adjamé-Plateau. The second is
East-West up to Yopougon West Zone. The temporal distribution of nitrate in water from the Continental
Terminal in Abidjan showed that for decades, nitrate levels have been rising. This increase in nitrate is
related to population growth and rapid urbanization of the city of Abidjan.
Keywords: Human activities, groundwater, environment, nitrate pollution.