This pollution, known as acid mine drainage, contaminates roughly 4,000 kilometers (2,500 miles) of West Virginia waterways. It's a legacy of more than a century of coal mining in the region.

About a third of medical staff have been contaminated by the highly contagious virus.

Japan's vast fishing industry, as well as its neighbor South Korea, have strongly opposed the idea of dumping the contaminated water into the ocean.

Tom died because he had eaten some contaminated beef.

Tens of thousands of tons of contaminated water from the Fukushima nuclear plant might have to be released into the Pacific Ocean, Japan's environment minister said Tuesday.

The new coronavirus is believed to have come from a bat who contaminated a pangolin at a wildlife market in China.

Meteors often fall into dirt or water, and if they are not discovered quickly, they can be contaminated by organic Earth material.

The water Tom drank was contaminated.

Tom ate a salad contaminated with the cyclospora parasite.

The water in this village is contaminated by arsenic.