More than 30 Minnesota community water systems were targeted on July 26 and 27. Plymouth lost communications with parts of its water infrastructure, though workers kept water flowing. State and local officials have said the Minnesota attacks did not threaten water safety, but that in some cases certain systems were taken offline and had to be reset manually. Federal inspectors found that more than 70% of water systems examined beginning in September 2023 violated basic federal risk and emergency-planning requirements. President Donald Trump's administration should treat the Minnesota attacks as a national-security warning before investigators settle attribution.