Test Your Knowledge on Recycling Pop Quiz: What is the most commonly recycled material? A: Paper B: Aluminum C: Car Batteries D: Glass E: Plastic The answer might surprise you: car batteries. The U.S. recycles about 70% of office paper, about 54% of our aluminum, about 35% glass, about 30% of plastic, and 99% of car batteries. Unfortunately, improper handling of old lead acid batteries one of the worst pollution problems for the globe. At Junk King, we use EPA-approved recyclers to ensure that the lead stays out of landfills and our water. (We like to fish.) Test Your Knowledge on Recycling