http://www.abc.net.au/news/2013-07-31/plastic-beads-found-in-great-lakes-usa/4856350
Tiny plastic beads commonly found in beauty products are showing up in North America’s Great Lakes, sparking concerns for the health of the world’s largest surface freshwater system.
Scientists have already found the particles floating in the oceans, but a non-profit California-based environmental activist group recently reported the same contamination in lakes Erie, Superior and Huron.
A team of researchers with the 5 Gyres Institute collected samples from the interconnected lakes during the past northern summer and found large quantities of round, plastic pellets – also called “microbeads”, which are often less than a millimetre in diameter.
Microbeads make up the exfoliant component of such products as facial scrubs, body washes and toothpastes, and are designed to wash down a household drain.