Plumbed drinking water in developed countries is pretty clean, but invisible contaminants can still lurk. One mysterious ...

Scientists find chloronitramide anions form in water treated with chloramines, raising questions about the ions’ toxicity ...

The effects of a chemical that’s produced when water is treated for viruses and bacteria are unknown, but there's a clear ...

A newly identified chemical byproduct may be present in drinking water in about a third of U.S. homes, a study found.