What plastics should be avoided?

Which Plastics Should You Avoid?

Not all plastics are created equal—some are far more harmful than others, both to human health and the environment. When it comes to reducing your exposure and minimizing waste, knowing which types to avoid can make a real difference.

#3 PVC (polyvinyl chloride) is one of the most toxic plastics used in everyday products. Commonly found in pipes, vinyl flooring, and some food wraps, it releases harmful chemicals during production and can leach additives like phthalates over time. These substances have been linked to hormonal disruptions and other health concerns.

Then there’s #6 PS (polystyrene), better known as Styrofoam. Frequently used in disposable cups, takeout containers, and packaging materials, it breaks down easily into microplastics and is notoriously difficult to recycle. When heated, it can also release styrene, a compound suspected of being carcinogenic.

Another problematic type is #7 PC (polycarbonate), often used in reusable water bottles and food containers. While durable, it can leach bisphenol A (BPA)—a chemical tied to various health issues—especially when exposed to heat or wear. It’s important to note that #7 is a catch-all category; while PC is concerning, other #7 plastics like PLA (a plant-based, biodegradable option) are much safer and more sustainable.

Black plastics, though not defined by a resin code, are another red flag. Often made from recycled electronic waste, they contain hazardous additives and aren’t detectable by standard recycling sorting systems, meaning they usually end up in landfills or incinerators.

Choosing alternatives—like glass, stainless steel, or safer plastics like #2 HDPE and #5 PP—can help reduce your environmental footprint and protect your health. A little awareness goes a long way.