A newly identified compound in tap water that had eluded scientists for decades prompts safety concerns for a third of Americans.

"A major goal of our work is to identify these chemicals and the reaction pathways through which they form," said Julian ...

Chloramines are used to disinfect drinking water. "For over a century, chemical disinfection of public water supplies has effectively reduced waterborne disease by killing pathogens in drinking ...

But about two months after Helene brought historic flooding and devastating landslides, health officials are seeing lower-than-expected demand for free well-water sampling and disinfection kits.