Cyberattacks Hit Water Systems in at Least 12 U.S. States, Officials Say

Cyberattacks on U.S. water systems that officials suspect may be linked to Iran-backed hackers have been reported in at least 12 states, according to sources familiar with the matter who spoke to CBS News.

Water infrastructure in the United States faces increasing cybersecurity threats as utilities work to protect pumps, valves and control systems from cyberattacks. [Photo: Clayton County Water Authority]

The affected states reportedly include Michigan, Minnesota, Georgia, New Jersey and South Dakota. In Minnesota, more than 30 community water systems were affected, according to information previously obtained by CBS News.

In Georgia, the Clayton County Water Authority, which serves approximately 300,000 customers in the Atlanta area, said cyber activity last month caused a drop in water pressure and prompted the agency to issue a boil-water advisory.

Service was restored within hours.

Some utilities lost critical remote-control capabilities, forcing operators to switch to manual operations. Officials said that in several cases, hackers gained remote access to pumps, valves and water-pressure systems.

So far, officials said the attacks have not compromised the safety of drinking water, which has remained safe.