"Investigators cautioned that the assessment was preliminary. There were no indications that any water supply had been rendered unsafe to drink."

"Investigators believe a cyberattack this week on dozens of municipal water systems in Minnesota was probably the work of Iranian hackers, according to U.S. and state officials and others familiar with the matter, a potential act of aggression that comes at a precarious moment in the U.S. war against Iran.

Officials cautioned that they had not definitively determined who was responsible for the attack and that the preliminary assessment could change as the authorities collected more technical data.

They also warned that the hackers could be attempting to pose as Iran-based in an effort to ratchet up tensions between the two countries, though former intelligence officials said such a scenario was unlikely.

Local officials reported that the well and treatment plant in at least one city was temporarily offline on Monday, while other cities in the state had to use manual workarounds to cope with attempted attacks on automated operations."

Dustin Volz and Ernesto Londoño report for the New York Times July 30, 2026. [2]

SEE ALSO:

"More tHan 30 Minnesota Water Systems Targeted In Cyberattack" (MPR News) [3]

"U.S. Investigating Whether Iran Was Behind Cyberattack On Minnesota Water Systems" (CBS News) [4]

"U.S. Spy Agencies Suspect Iran Launched Cyberattack On Minnesota Water Facilities" (Washington Post) [5]

"MNIT Activates Statewide Cybersecurity Response To Support Affected Communities And Protect Critical Infrastructure" (Minnesota IT Services release) [6]