Home/American Shipper/Wal-Mart fined for improper waste disposal American Shipper Wal-Mart fined for improper waste disposal FreightWaves Staff · Wednesday, May 29, 2013 Facebook Twitter Pinterest LinkedIn Wal-Mart Stores has pleaded guilty to illegally disposing of hazardous materials at its U.S. retail stores and will pay $81 million for its six negligent violations of the Clean Water Act, according to the EPA.