Introduction to Emerging Contaminants What are Emerging Contaminants?

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Presentation transcript:

Introduction to Emerging Contaminants What are Emerging Contaminants?

Emerging does NOT mean that these chemicals are NEW. These chemicals have been released into the environments as long as they have been in use!

What are Emerging Contaminants?

McCall’s Magazine January 1946

What are Emerging Contaminants? Drugs - Consumer Products – Chemicals Pharmaceuticals and Personal Care Products (PPCPs) Polybrominated Flame Retardants (PBDEs) Fragrances Disinfectants Nanomaterials Detergents and Surfactants Antioxidants Plastics Pesticides and Repellants Fumigants

What are Emerging Contaminants? Encompasses many classes of chemicals! Even the term raises technical questions! Not currently regulated! Unknown or incomplete knowledge of environmental fate and toxicity!

Introduction to Emerging Contaminants Why should our industry care?

Greater Scientific Interest

Why should our industry care? Greater Public Interest Drugs are in the Water. Does it Matter? New York Times, 2007 Unused Medicine a “painful” waste, possible hazard. Denver Post, 2005 Hormonal chemicals may be imperiling fish The Seattle Times, 2007 Mystery toxins turn male bass into mothers….. Lexington Hearld-Leader, 2004 Discarded drugs take a bad trip in the environment Chigago Tribune, 2006

Why should our industry care? Scientific Certainty - Uncertainty Endocrine Disruption! Acute Wildlife Effects! Skewed Sex Ratios! Chronic Wildlife Effects! Antibiotic Resistance! Gender Abnormalities! Intersex Fish! U-Shaped Dose Response Curves!

Introduction to Emerging Contaminants What we know or don’t know!

Certain emerging contaminants have been shown to interact with the endocrine system. There is scientific evidence to suggest that aquatic organisms have been effected. There is great scientific debate whether humans are effected at the environmental concentrations present today.

What we know or don’t know! USGS has detected many of these chemicals in water bodies throughout the United States. Many of these chemicals are routinely used by the average household. The widespread use of these chemicals allows for many points on entry to the environment.

What we know or don’t know! Wastewater treatment does not completely remove these chemicals from waste streams. Is A New Paradigm In Order?