A previously unidentified chemical has been discovered in the tap water of about one-third of U.S. homes, a new study has ...

For more than four decades, scientists have noticed a mysterious chemical in the treated drinking water of millions of people ...

Since the 1990s, many public systems have switched to inorganic chloramine, a chlorine derivative, to purify water supplies. Systems serving about 113 million people in the U.S. use this process.

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

Some water systems decided to use chloramine -- a chemical compound formed by mixing chlorine and ammonia -- as a ...

An international team of researchers from the United States and Switzerland has identified chloronitramide anion as a ...

That byproduct has at last been identified, 40 years after it was first observed, but whether it’s dangerous remains an open ...