Carnegie Mellon University
Plastic, Metal & Glass

Many of the bottles and cans (and other plastic, glass and metals) you use each day can be recycled. Please don't forget to rinse out the container before you put it into the blue recycling containers (with the round hole). Consider what types of containers you choose when bringing your meal to campus. Styrofoam cannot be recycled and will always end up in a landfill. Always make sure you are putting your recyclables into the right container... If you put something other than what is allowed the entire bag is considered contaminated and cannot be recycled.

Help CEE fulfill its commitment to green practices and to reduce, reuse and recycle!


    Aluminum cans
    Steel cans
    Unbroken glass of any color
    Beverage container lids
    Plastics with a number 1-5 in the center of the recycling symbol

Not Acceptable

    Plastic without symbols listed above
    Plastic with a number 6 or 7 in the center of the recycling symbol

What do those numbers mean?

Plastic 1: Polyethylene terephthalate (PET, PETE), the most widely recycled plastic, is used for soft-drink bottles and is also commonly found in textiles, which explains why a bottle can be turned into fleece.

Plastic 2: High-density polyethylene (HDPE) is used for detergent bottles and grocery bags.

Plastic 3: Polyvinyl chloride (PVC or vinyl) is what salad-bar containers are made from.

Plastic 4: Low-density polyethylene (LDPE) is used for dry-cleaning and fresh-produce bags.

Plastic. 5: Polypropylene (PP) is what makes bottle caps, yogurt cups, and drinking straws.

Plastic 6: Polystyrene (PS) is also known as Styrofoam.

Plastic 7: These "other" plastics, such as polycarbonate baby bottles, are generally not recyclable at most centers.