Before the Bosnian War, the Bosna river was heavily polluted due to heavy industrial activity at the nearby Natron paper and pulp factory, as well as steel and wood industry factories in the southern cities of Zenica and Zavidovići respectively.
Prior to the Bosnian War, the Bosna river was heavily polluted by heavy industrial activities at nearby Natron paper and pulp factory, as well as steel and wood industry factories in Zenica and Zavidovići.