lynn. l. bergeson bergeson & campbell, p.c. ncac sot: emerging issues in water contamination...
TRANSCRIPT
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Lynn. L. BergesonBergeson & Campbell, P.C.www.lawbc.com
NCAC SOT: Emerging Issues in Water Contamination
Chemical Pollutants in Water: The Emerging Challenges Stakeholders Face
April 15, 2010
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Old Problems: New Twists
■ Water contamination is not new
■ Certain water contaminants are new, however, and others are new to detection New class of contaminants called organic
micropollutants
Concept is micro “dose”/low dose
Three large groupings
● Endocrine Disruption Compounds (EDCs)
● Pharmaceuticals/Personal Care Products (PCPs)
● Engineered Nanomaterials
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Endocrine Disruption Compounds
■ EDCs are not new, but emphasis on them is relatively recent, and now quite intense under FQPA and SDWA
■ 67 chemicals have been identified by EPA to be in the first group of chemicals to be screened 756 test orders
Sent to 440 companies
■ Second list of 100 chemicals to be screened is expected to be available by October 2010
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Pharmaceuticals/Personal Care Products (PCPs)
■ Contaminants include broad range of pharmaceuticals and PCPs, including veterinary medicines
■ Many typically contain a broad spectrum of substances that represent a range of physico-chemical properties
■ A recent article published by The Royal Society[1] categorized common pharmaceuticals and PCPs by chemical compound classes as follows: acidic pharmaceuticals, including ibuprofen, naproxen, diclofenac, and benzafibrate; neutral pharmaceuticals, including antiepileptics, psychiatrics, and lipid regulators; betablockers such as metoprolol, atenolol, sotalol, and salbutamol; iodinated X-ray contrast media, including diatrizoate, iopamidol, and iopromide; and antibiotics such as triclosan, tetracyclines, and penicillins.
[1] Comerton, A., et al. (2009). Practical Overview of Analytical Methods for Endocrine-Disrupting Compounds, Pharmaceutical and Personal Care Products in Water and Wastewater. Phil. Trans. R. Sor. A. 367:3923-3939.
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Pharmaceuticals/Personal Care Products (PCPs) (cont’d)
■ Legislative response -- In 2009, the National Water Research and Development Initiatives Act was passed in the House. It would coordinate federal research and development efforts regarding trace levels of pharmaceuticals/PCPs in drinking water
■ A host of other measures have been introduced, along with state initiatives
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Engineered Nanomaterials
■ Rapid commercialization -- Over 1,000 nano-enabled products in commerce according to Project on Emerging Nanotechnologies
■ Nanoparticles may be released in manufacturing operations, when products are used as intended (sun screen lotions), and upon end of life
■ Intentional application of certain nanomaterials as remedial measures (zero valent nanoscale iron)
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Technical Challenges
■ Detection/Identification
■ Characterization
■ Number of contaminants
■ Treatment
■ Resources
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Thank you
Lynn L. Bergeson
BERGESON & CAMPBELL, P.C.
1203 Nineteenth Street, N.W., Suite 300
Washington, D.C. 20036
www.lawbc.com
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