The term "emerging contaminats" and its multiple variants has come to refer to unregulated compounds discovered in the environment that are found to represent a potential threat to human and ecological receptor. Such contaminats create unique and considerable challenges as the push to address them typically outpaces the understanding of their toxicity, their need for regulation, their occurence, and techniques for treating the environmental media they affect.

* Explores the definition, identification and life cycle of emerging contaminats.
*review current information on sources, toxicology, regulation, and new tools for characterization and treatment of:
1,4-dioxane
per- and poklyfluoroalkyl substances
hexavalent chromium
1,2,3-Trichloropropane