The shoreline of Homebush Bay is in large parts artificial, with large scale land reclamations for industrial purposes occurring throughout the 20th century. Its history of use for industry and as dumping ground has left the bay heavily contaminated, including with dioxin and other chemicals produced by Union Carbide operations. Fishing is prohibited in Homebush Bay for health reasons. Other contamination includes phthalates, lead, polycyclic aromatic hydrocarbons, DDT and heavy metals. Remediation from 2008-2010 removed about 75% of the dioxin from the bay.