MISSISSIPPI — Chemical plants and paper mills are among the top polluters in Mississippi, which has seen a decrease in the total amount of toxic releases reported to the Environmental Protection Agency over the last five years. Certain industries are required by federal law to report every year to the EPA their toxic releases, which include air and water emissions as well as land disposals. Over the last five years, the facilities with the most toxic releases in Mississippi were: Tronox, LLC – 72.6 million pounds of releases… Chemours DeLisle – 72.3 million pounds… Georgia Pacific Leaf River – 15.7 million pounds… Choctaw Generation… Tyson Farms, Carthage –  9.5 million pounds. … Overall, toxic releases reported to the EPA show a 17% decrease in the state from 2017 through 2021, the latest year of available data. The most abundant chemicals in those releases were manganese, nitrate, vanadium, ammonia and chromium.