Plastic #7 is generally not recyclable through curbside programs. The number 7 is a catch-all category labeled “Other,” meaning it includes any plastic that doesn’t fit into categories 1 through 6. Because the materials in this group vary so widely, most recycling facilities can’t process them, and placing #7 items in your recycling bin can actually contaminate batches of otherwise recyclable plastic.
What Plastic #7 Actually Includes
Resin identification codes 1 through 6 each represent a specific type of plastic. Code 7 is the junk drawer. It covers polycarbonate (used in eyewear lenses and some water bottles), bio-based plastics like PLA (the plant-derived material in many compostable cups and utensils), and any blend or layered combination of other resins. A multilayer food pouch, a pair of sunglasses, and a compostable fork can all carry the same #7 symbol despite being made of completely different materials.
This lack of consistency is the core problem. A recycling facility that receives a bale of #7 plastics has no reliable way to know what’s actually in it, which makes reprocessing those materials into something new nearly impossible through standard methods.
Why Recycling Facilities Reject It
Most curbside recycling programs will not accept #7 products. Sorting facilities, known as materials recovery facilities (MRFs), rely on optical sorters equipped with near-infrared sensors to identify and separate plastics by resin type. These systems work well for common, consistent plastics like PET (#1) and HDPE (#2). But because #7 can be made from any combination of polymers, the sensors can’t reliably categorize it or route it to the right processing stream.
Even one misplaced #7 container in a batch of #1 or #2 plastic can act as a contaminant. If it isn’t caught and removed, it can degrade the quality of an entire recycling batch. This is especially true for PLA-based compostable plastics, which look similar to conventional clear plastics but behave very differently when melted down. Facilities that do have advanced AI-powered sorting robots could theoretically catch more of these contaminants, but the technology hasn’t been widely adopted because the investment costs are hard to justify given the low market value of recovered mixed plastics.
The Compostable Plastic Confusion
If you’ve seen a cup or container labeled “#7/PLA” or “compostable,” you might assume it’s an environmentally friendly option. PLA is made from plant-based starches rather than petroleum, but its disposal path is more limited than most people realize.
PLA doesn’t break down in a home compost bin, in a landfill, or in the natural environment with any meaningful speed. It requires processing at a commercial, high-rate composting facility with controlled heat and moisture conditions. These facilities exist, but access varies dramatically by region. If your area doesn’t have one that accepts PLA, the material effectively has no recycling or composting pathway and ends up in a landfill regardless of its plant-based origins.
Worse, when PLA ends up in recycling bins alongside conventional plastics, it acts as a contaminant. It’s one of the most common sources of cross-contamination in recycling streams for codes 1 through 6.
BPA Concerns With Some #7 Plastics
Some, but not all, plastics marked with code 7 contain bisphenol A (BPA), a chemical that has drawn health scrutiny for its potential to mimic hormones in the body. Polycarbonate plastics in particular may contain BPA, and the compound can leach into food or drinks, especially when the plastic is heated.
The FDA’s current position, based on its review of hundreds of studies, is that BPA is safe at the very low levels found in food. That said, if you prefer to limit your exposure, avoid microwaving food in #7 polycarbonate containers and look for products specifically labeled “BPA-free.” Not every #7 plastic contains BPA, but without additional labeling there’s no easy way to tell which ones do.
New Labeling Laws Are Changing the Picture
One reason plastic recycling symbols can be misleading is that the familiar “chasing arrows” triangle doesn’t actually mean a product is recyclable. It only identifies the resin type. California’s SB 343, enacted in 2021, directly targets this confusion by prohibiting the chasing arrows symbol (or any other recyclability indicator) on products and packaging unless the material genuinely meets recyclability criteria. The labeling restrictions apply to products manufactured after October 4, 2026, giving manufacturers time to update their packaging.
This means that in California, and potentially in other states that follow suit, #7 plastics will likely lose the triangular arrow symbol entirely since so few programs actually recycle them. The goal is to prevent consumers from tossing non-recyclable items into the recycling bin under the assumption that the arrows mean “this is recyclable.”
What You Can Actually Do With #7 Plastic
Your practical options depend on the specific type of #7 plastic you have:
- PLA compostables: Check whether your municipality or a nearby facility accepts compostable plastics. If not, these go in the trash. Do not put them in your recycling bin.
- Polycarbonate items (water cooler jugs, eyewear, electronics casings): These are not curbside recyclable. Some specialty recyclers accept polycarbonate, but you’ll need to search for one in your area.
- Mixed or unknown #7 plastics: If you can’t identify the specific material, it goes in the trash. Putting it in recycling risks contaminating an entire batch of usable material.
Chemical recycling technologies, which break plastics down into their basic chemical building blocks using high heat (a process called pyrolysis), can theoretically handle mixed and contaminated plastics that mechanical recycling cannot. These processes convert waste plastic into oils or gases that can be used to make new plastic or fuel. However, this infrastructure is still limited in scale and not something consumers can access through normal waste disposal channels.
The bottom line: if you’re holding a plastic item with a 7 on the bottom and wondering whether it goes in the blue bin, the answer in almost every community is no. Putting it there does more harm than good.