After September 11, 2001, the nation focused on how to enhance the security of the United States. President Bush signed the Bioterrorism Act into law on June 12, 2002. The Bioterrorism Act is divided into five titles:

*Title 4: Drinking Water Security and Safety, the Act outlines requirements for Vulnerability Assessments and Emergency Response Plans to be developed in order to protect community water systems throughout the United States.