Mysterious chemical byproduct in U.S. tap water finally identified. Scientists discover formula and structure of chlorine-related molecule and urge tests for possible toxicity.

More than 113 million Americans drink water that has been treated with chloramine, a compound created when chlorine and ammonia are combined. Getty Images/iStockphoto Researchers say they have ...

Firefighters on Wednesday morning returned to the scene of a hazmat situation at a pool supply store on Shotwell Road in ...

A large-scale chlorine gas leak in Brazoria County in May sparked concerns over the suffocating chemical reaching Clute, Lake Jackson and Richwood.

FREEPORT, Texas — A chlorine leak at a Texas chemical plant on Tuesday prompted officials to ask residents in two Texas cities near the facility to shelter in place.

More than 93,000 residents living in one Georgia county were told Monday to continue sheltering in place after a fire at a chemical lab over the weekend led to a plume of smoke containing chlorine ...

Shelter-in-place recommendations and evacuation orders have been lifted Monday after a fire at a Georgia industrial plant caused a chemical reaction that prompted around 17,000 people to evacuate ...

Shelter-in-place recommendations and evacuation orders have been lifted Monday after a fire at a Georgia industrial plant caused a chemical reaction that prompted around 17,000 people to evacuate ...

A newly identified chemical byproduct may be present in drinking water in about a third of U.S. homes, a study found. Scientists think it might be toxic but do not yet know.

A shelter-in-place advisory was extended for a Georgia county Monday after chlorine was detected in the air — a result of a fire at a chemical lab that started Sunday.

That product turns out to be chloronitramide anion, a compound of chlorine, nitrogen and oxygen atoms. This is a novel chemical. It doesn’t appear in the Chemical Abstracts Service, a registry ...