Informatics Practices · Ch 6 — Societal Impacts
Impact of e-waste on environment
Impact of e-waste on environment
E-waste does not just pile up in landfills — it actively degrades the environment. The same electronic devices that make life convenient become a source of air, water, and soil pollution when discarded improperly. The core problem is that e-waste contains toxic materials that do not stay locked inside the device forever.
When e-waste is thrown into landfills or open dumping grounds, it is exposed to air and moisture. This triggers a process called leaching — the movement of a substance out of a material by water passing through it. As water seeps through the discarded electronics, it carries harmful chemicals and heavy metals out of the components and into the surrounding soil. This is how soil pollution begins.
Once the soil is contaminated, the chemicals do not stop there. They continue to travel downward until they reach the natural groundwater table. Groundwater that was once clean becomes polluted and unfit for drinking, for animals, and even for irrigation. This is water pollution caused by e-waste.
Air pollution also occurs. When e-waste is crushed, burned, or simply weathered, dust particles loaded with heavy metals become airborne. Inhaling this dust is dangerous for anyone living near a dumping site.
The University of California Law has specifically identified non-functioning cathode ray tubes (CRTs) from old televisions and computer monitors as hazardous. CRTs contain lead and other toxic substances that leach readily.
To summarise the three pathways of pollution from e-waste:
| Type of pollution | How e-waste causes it |
|---|---|
| Soil pollution | Leaching of chemicals into the ground when e-waste is dumped in landfills |
| Water pollution | Contaminated leachate reaches groundwater, making it unsafe for humans, animals, and agriculture |
| Air pollution | Heavy-metal-laden dust particles released into the atmosphere from broken or burned e-waste |