In 2002, the concentration of iron in the Lackawanna River near Forest City was less than 0.3 milligrams per liter. The manganese concentration ranged from less than 0.05 to 0.175 milligrams per liter, with an average of 0.1103 milligrams per liter. The concentration of aluminum ranged from less than 0.5 to 0.692 milligrams per liter, with an average of 0.6255 milligrams per liter. The pH ranged from 6.1 to 7.4 (with an average of 6.7), the acidity concentration ranged from 0 to 10.4 milligrams per liter (with an average of 1.73 milligrams per liter), and the alkalinity concentration ranged from 16.4 to 32 milligrams per liter (with an average of 22.3 milligrams per liter). The sulfate concentration ranged from less than 20 to 30.7 milligrams per liter, with an average of 28.4 milligrams per liter.