Recycling contamination occurs when materials are not properly cleaned or when materials are incorrectly sorted. When you are collecting recyclable materials and sorting them into bins, anything other than that specific material – even other recyclable materials – can be considered a contaminant.
How can other recyclable materials be considered contaminants?
Each type of material goes into a different machine to be broken down for recycling. If a plastic bag, for instance, gets mixed in with cardboard, the plastic bag may wrap around axles in the machine, causing the machine to break down and requiring employees to dig the bag out of the machine, which is both dangerous and a waste of time, energy, and money.
What happens to contaminated materials?
Contaminated items become trash and go in the landfill.
How do I prevent contamination?
1. Keep your recyclables separated in labeled bins. Consider adding what can and cannot be recycled in each of these bins as a reference for yourself and others when disposing of items.
2. Be sure all items are clean and dry – no food residue, oil, grease, or liquids (including water).
3. If you’re unsure of what can be recycled and how to do so, contact your recycling provider.
4. Avoid “wish-cycling,” meaning throwing something in the recycling that you hope can be recycled and will eventually end up where it needs to be.
Common types of contamination?
- Plastic bags and items made from their plastic material such as shrink wrap, bubble wrap, newspaper bags, trash bags, etc.
- Food Waste
- Loose Shredded-Paper (shredded paper should all be kept in a clear plastic bag)
- Brightly Colored Paper
- Some Beverage Cartons (depends on the recycling location)
- The Wrong Plastics (acceptable plastics varies by center)
- Hazardous Waste (check with your local facility for disposal of these containers
- Bio-Hazardous Waste (syringes, needles, diapers, sanitary products)
- Frozen Food Containers
- Unrinsed or Metal-Capped Glass
- Small items (smaller than a credit card) which can jam machines
Download a print-friendly flyer about recycling contamination.