1. Pharmaceuticals, Hormones, and Other Organic Wastewater Contaminants in U.S. Streams, 1999−2000: A National Reconnaissance (see: http://pubs.acs.org/doi/abs/10.1021/es011055j)
2. Endocrine Disruption Found in Fish Exposed to Municipal Wastewater (see: http://toxics.usgs.gov/highlights/wastewater_fish.html)
3. EPA Testimony Before Congress, 2008
4. University of Utah College of Pharmacy brochure, “Proper Disposal of Prescription and Over-the-Counter Drugs for Utah Households”
5. Use Only As Directed website.