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  2. Region 8 Drinking Water Online

AWIA Section 2013/SDWA Section 1433: Risk and Resilience Assessments and Emergency Response Plans

On October 23, 2018, America's Water Infrastructure Act (AWIA) was signed into law. AWIA section 2013, which amended section 1433 of the Safe Drinking Water Act (SDWA),  requires community (drinking) water systems (CWSs) serving more than 3,300 people to develop or update risk and resilience assessments (RRAs) and emergency response plans (ERPs). The law specifies the components that the RRAs and ERPs must address, and establishes deadlines by which water systems must certify to EPA completion of the RRA and ERP. The Federal Register Notice for New Risk Assessments and Emergency Response Plans for Community Water Systems is available. 

SDWA section 1433 also states that EPA should provide guidance and technical assistance to water systems that serve less than 3,301 people on how to conduct RRAs and ERPs, though these systems are not required to certify completion to EPA.

For more information concerning AWIA section 2013/SDWA section 1433, please see the law text on congress.gov.

  • Risk and Resilience Assessment and Emergency Response Plan Requirements for Drinking Water Utilities Fact Sheet (pdf) (191.47 KB)

    Certification Deadlines

    Population ServedPrevious RRA DeadlineNext 5-Year Submission Cycle RRA Deadline
    ≥100,000March 31, 2020March 31, 2025
    50,000-99,999December 31, 2020December 31, 2025
    3,301-49,999June 30, 2021June 30, 2026
    Population ServedPrevious ERP Deadline*Next 5-Year Submission Cycle ERP Deadline*
    ≥100,000September 30, 2020September 30, 2025
    50,000-99,999June 30, 2021June 30, 2026
    3,301-49,999December 31, 2021December 31, 2026

    *ERP certifications are due six months from the date of the RRA certification. The dates shown above are certification dates based on a utility submitting a RRA on the final due date. 

Region 8 Drinking Water Online

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Contact Us about Drinking Water in Wyoming or on Tribal Lands in EPA Region 8
Contact Us about Drinking Water in Wyoming or on Tribal Lands in EPA Region 8 to ask a question, provide feedback, or report a problem.
Last updated on September 9, 2025
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