E-waste is any electrical or electronic device that has been discarded, whether it’s broken, outdated, or simply replaced by something newer. This includes everything from smartphones and laptops to refrigerators, televisions, and medical equipment. In 2022, the world produced a record 62 million tonnes of e-waste, and that number is on track to reach 82 million tonnes by 2030.
What Counts as E-Waste
If it runs on electricity or a battery and you’re throwing it away, it’s e-waste. The most common items in the waste stream are computers, mobile phones, and large household appliances like washing machines, air conditioners, and microwaves. But the category also covers smaller items people rarely think about: electric toothbrushes, LED bulbs, cables, power tools, and even medical devices like blood pressure monitors.
The sheer volume is hard to picture. The 62 million tonnes generated in 2022 would fill 1.55 million 40-tonne trucks, enough to form a bumper-to-bumper line encircling the equator. Put another way, it equals the weight of roughly 107,000 of the world’s largest passenger aircraft lined up from New York to Athens.
Why E-Waste Is Dangerous
Electronics contain a cocktail of toxic materials that are perfectly safe while sealed inside a working device but become hazardous once that device is cracked open, burned, or left to decompose in a landfill. The most concerning substances include lead, mercury, cadmium, arsenic, chromium, and nickel, along with flame retardants and industrial compounds originally added to make plastics more durable or fire-resistant.
When e-waste sits in a landfill, rain and moisture cause these chemicals to leach into the surrounding soil and groundwater. In developing countries, where much of the world’s e-waste ends up being dismantled by hand in informal recycling operations, the exposure is far more direct. Workers and nearby residents inhale fumes from burning circuit boards and handle components without protective equipment, releasing heavy metals and toxic compounds into the air, water, and soil.
Health Effects of Exposure
The health consequences of chronic e-waste exposure are extensive and affect nearly every organ system. Lead, cadmium, and arsenic damage the kidneys. Lead also interferes with the production and survival of red blood cells, causing anemia. Mercury, aluminum, arsenic, and lead disrupt the way nerve cells communicate, impairing brain function. Arsenic, cadmium, chromium, and nickel are known carcinogens linked to lung, skin, and bladder cancer.
Cardiovascular damage is another major concern. E-waste chemicals injure blood vessel walls, trigger inflammation, promote plaque formation, and contribute to high blood pressure. Respiratory effects include reduced lung function, increased asthma risk, and persistent coughing and wheezing tied to elevated blood levels of chromium and manganese.
Children and pregnant women face the greatest risks. Exposure during pregnancy, infancy, or early childhood has been linked to obesity, asthma, and neurodevelopmental problems, including lower scores on cognitive and language tests and difficulties with sensory processing. E-waste chemicals also disrupt thyroid function and interfere with sex hormones, contributing to reduced sperm count in men and broader endocrine problems in both sexes. Studies have even found that children living near informal recycling sites show weaker immune responses to routine vaccines for diseases like diphtheria, tetanus, polio, and hepatitis B.
What’s Actually Inside Your Electronics
Electronics aren’t just toxic. They’re also surprisingly valuable. The metal content of e-waste typically includes about 20% copper, 8% iron, 4% tin, 2% nickel, and smaller amounts of zinc, silver, gold, and palladium. Gold concentration in e-waste averages around 250 grams per tonne, which is significantly higher than what you’d find in naturally mined gold ore (typically 1 to 5 grams per tonne).
This makes e-waste one of the richest “urban mines” on the planet. Rare and valuable elements like tantalum, germanium, and selenium are also present in small quantities. Recovering these materials through proper recycling reduces the need to extract virgin resources, which is itself an environmentally destructive process involving deforestation, water pollution, and massive energy consumption.
Where Most E-Waste Ends Up
Despite the value locked inside discarded electronics, the vast majority of e-waste is not formally recycled. Global e-waste generation is rising by 2.6 million tonnes every year, but documented recycling rates have not kept pace. Much of what isn’t formally collected ends up in landfills, is incinerated, or is shipped to countries with weaker environmental regulations, where it’s processed informally under hazardous conditions.
This imbalance prompted an update to the Basel Convention, the primary international agreement governing the movement of hazardous waste across borders. Starting January 1, 2025, any international shipment of e-waste, including non-hazardous e-waste and scrap, requires the prior written consent of the importing country and any transit countries the shipment passes through. This is the first time non-hazardous electronic scrap has been controlled under the treaty, closing a loophole that previously allowed huge volumes of e-waste to flow across borders with little oversight.
Reducing E-Waste at the Source
Recycling alone won’t solve a problem growing this fast. The most effective strategy is keeping electronics in use longer, which is the core idea behind the Right to Repair movement. When you can replace a cracked screen or a degraded battery instead of buying an entirely new device, the device stays out of the waste stream for years longer. Fewer replacements also means less resource extraction and less energy spent on manufacturing.
Several U.S. states have begun passing Right to Repair laws that require manufacturers to make parts, tools, and repair documentation available to independent repair shops and consumers. California’s Right to Repair Act, effective July 2024, covers electronics and appliances sold for $50 or more and requires manufacturers to supply repair materials for three to seven years after production ends, depending on the product’s price. Other states have passed similar legislation with comparable requirements.
On an individual level, the most impactful steps are straightforward: use devices for as long as possible, repair them when you can, sell or donate working electronics instead of discarding them, and bring dead devices to certified e-waste recyclers rather than tossing them in the trash. Many municipalities and electronics retailers offer free drop-off programs specifically for this purpose.