Water Supplier American Water Works Says Hackers Breached System

American Water Works Co. Inc., which supplies drinking water and wastewater services to more than 14 million people, said hackers had breached its computer networks and systems.

The New Jersey-based company has disconnected or deactivated some systems in an effort to contain the cyberattack and is investigating the nature and scope of the breach, which was discovered on Oct. 3. The company said in a regulatory filing Monday that it currently doesn’t believe water or wastewater operations have been affected, but noted that it can’t yet predict the full impact of the incident.

US government officials and cybersecurity researchers ...