Document Type

Fact Sheet

Publication Date



Under AWIA, community water systems (CWS) serving more than 3,300 people must develop or update their Risk and Resiliency Assessments and their Emergency Response Plans (ERPs). The new law adopted in October, 2018 amends the Safe Drinking Water Act and specifies what the assessments must address and establishes deadlines to file certifications to EPA. Assessments are required to be updated every 5 years, and certification of the reviews must be sent to EPA.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.