Summary:

- Researchers have discovered a previously unknown compound in U.S. drinking water that may be potentially toxic.
- The compound, known as PFAS (per- and polyfluoroalkyl substances), is a class of man-made chemicals that are widely used in various products and have been linked to health issues.
- The researchers analyzed water samples from across the U.S. and found that this new PFAS compound is present in drinking water, raising concerns about its potential impact on public health and the need for further investigation and regulation.