A wave of cyber incidents targeting water and wastewater infrastructure has put utilities across multiple states on high alert, as federal authorities investigate attacks that have disrupted operations and exposed vulnerabilities in critical public services. The FBI and Environmental Protection Agency (EPA) warned on July 30 that malicious cyber actors had targeted water and wastewater systems in at least seven states since July 27, 2026, causing operational disruptions and, in some cases, degrading water operations. Since then, incidents in fours states appear to match the federal warning. What the FBI Said According to the FBI alert, attackers targeted internet-facing Programmable Logic Controllers (PLCs), which are devices used to monitor and control industrial equipment at water and wastewater facilities. The agency said hackers altered IP addresses and passwords, causing utilities to lose monitoring and control capabilities. Reported consequences included flooding and pressure loss in affected systems. Federal officials said water utilities reported incidents in at least seven states—at the time of reporting, the agencies haven’t identified the affected states—and urged operators to remove exposed control systems from the public internet and strengthen cybersecurity protections. Newsweek has reached out to the FBI for clarification on which states have been affected, and also the Cybersecurity and Infrastructure Security Agency (CISA) for further details about the attacks. Minnesota Reports More Than 30 Attacks The largest publicly disclosed cluster of incidents has emerged in Minnesota. Earlier this week, state officials said cyberattacks had targeted more than 30 water systems across the state. The attacks drew national attention after President Donald Trump referenced the incidents while discussing cybersecurity threats to critical infrastructure, calling Minnesota officials "grossly incompetent." Officials haven’t publicly identified who was responsible, and investigators are continuing to examine the origin of the attacks. Michigan Water System Targeted Michigan also reported a cyber incident affecting