Minnesota water system threat and the state of cybersecurity A coordinated cyberattack has targeted the operational technology of over 30 community water systems across Minnesota, triggering an emergency response from federal and state agencies. The incident has put a national spotlight on the critical vulnerabilities within the United States water infrastructure. The Minnesota Water System Threat Between July 26 and July 27, 2026, a wave of digital breaches hit water utilities in several Minnesota municipalities—including Plymouth, South St. Paul, Maple Plain, and Braham.