Report Description Section 2013 of America's Water Infrastructure Act (AWIA), which amended Section 1433 of the Safe Drinking Water Act (SDWA), requires community (drinking) water systems (CWS) serving more than 3,300 people to conduct risk and resilience assessments (RRAs), prepare emergency response plans (ERPs), and certify to the U.S. Environmental Protection Agency (EPA) that this work has been completed. CWSs must review, update (as needed), and re-certify their RRA and ERP to EPA every five years from the original deadlines specified in the law. For more information, please visit EPA’s AWIA Section 2013 website. This report will display which PWSIDs have and have not certified their RRA and ERP for the original AWIA compliance cycle, which took place during 2020-2021. After future five-year AWIA compliance deadlines have passed, EPA will update this report to add RRA and ERP certification data. Please see the Certification deadlines section of the AWIA Section 2013 website for deadlines of upcoming five-year AWIA compliance cycles. PWSIDs submit their AWIA Section 2013 RRA and ERP certifications directly to EPA, not to the Primacy Agencies. Thus, this certification data was not collected by and submitted to EPA’s SDWIS federal reporting services by the Primacy Agencies; the data was submitted from the AWIA Section 2013 Certification Database managed by EPA headquarters. Definitions ERP Certified 2020-2021: This column indicates which community water systems serving a population over 3,300 have certified (Y) or have not yet certified (N) completion of an emergency response plan (ERP) as required by Section 2013 of America's Water Infrastructure Act (AWIA) for the 2020-2021 compliance cycle. The data in this column is posted to SDWIS after the RRA certification deadline for each AWIA-specified size-category has passed. Please see the Certification deadlines section of the AWIA Section 2013 website for a list of past and upcoming deadlines for each AWIA-specified size-category. This data will be updated quarterly as new RRA certifications come in. RRA Certified 2020-2021: This column indicates which community water systems serving a population over 3,300 have certified (Y) or have not yet certified (N) completion of a risk and resilience assessment (RRA) as required by Section 2013 of America's Water Infrastructure Act (AWIA) for the 2020-2021 compliance cycle. The data in this column is posted to SDWIS after the RRA certification deadline for each AWIA-specified size-category has passed. Please see the Certification deadlines section of the AWIA Section 2013 website for a list of past and upcoming deadlines for each AWIA-specified size-category. This data will be updated quarterly as new RRA certifications come in.