carcinogen

The test results also found high levels of chromium — which, in some chemical configurations, is a carcinogen — on one campus.

When scientists found a carcinogen in the drinking water of Santa Rosa, Calif., after the Tubbs fire, it triggered a race to develop measures to keep residents safe.

The Environmental Protection Agency does not consider it a carcinogen; however, exposure to barium can cause gastrointestinal irritation, cardiovascular effects, kidney damage and respiratory problems.

The US non-profit organisation Consumer Reports tested samples from ten of the most popular brands of synthetic braiding hair, and found that all of them contained carcinogens, and in some cases, lead.

In Pacific Palisades, the Los Angeles Department of Water and Power found trace levels of benzene, a known carcinogen, in several locations and is still working on resolving the contamination, the Los Angeles Times reported.