By June 2015, the EPA regional office 'had information that the city of Flint Michigan exceeded the lead level at which corrosion control is required, and that Flint was not using a corrosion inhibitor.' It also knew that testing showed high levels of lead in at least four homes. Finally, the regional office 'knew that the state and local authorities were not acting quickly to protect human health.' And yet, the EPA did not issue an order until January 2016. According to the report, local authorities 'believed that the state of Michigan's actions to address the Flint situation barred formal federal action.' But that was incorrect – the Safe Drinking Water Act states that the EPA can take action if 'state actions are deemed insufficient.'