Why is it necessary to remove the bottle caps?
Unfortunately, the bottle caps are a different type of plastic than the bottles themselves, which can cause contamination during recycling if the two plastic types are mingled. Most plastic bottle caps are made from #5 PP, while the bottles they cover are often made from #1, PETE or #2, HDPE. Fortunately, in Washtenaw County there are options available for Bottle Cap Recycling.
