Water System Cyberattacks Hit 12 US States [2026]

Hackers have breached water and wastewater systems in at least 12 US states, ABC News reported October 18, 2026, citing sources. Officials say there has been no widespread disruption to drinking water supplies or wastewater treatment so far, though the campaign’s confirmed footprint continues to expand. Michigan State Police said they are monitoring the situation and coordinating with federal partners, while the attackers’ identity and motive remain unconfirmed. Earlier federal reporting tracked intrusions affecting seven states, and the jump to 12 has shifted the issue from regional to national. The reporting emphasizes that monitoring and control systems—often older industrial control setups—appear to be the primary targets, not the water itself.