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GAO-25-108095 1 (April 30, 2025)

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GAO U.S. GOVERNMENT ACCOUNTABILITY OFFICE
441 G St. N.W.                                                          Comptroller General
Washington, DC  20548                                                   of the United States



April 30, 2025


The Honorable  Lee Zeldin
Administrator of the Environmental Protection Agency
U.S. Environmental Protection Agency
1200  Pennsylvania Ave, NW
Washington,  D.C. 20460

Priority Open Recommendations: Environmental Protection Agency

Dear Administrator Zeldin:

Congratulations on your appointment. The purpose of this letter is to call your personal attention
to four areas based on GAO's past work and nine open priority recommendations, which are
enclosed.1 Additionally, there are 73 other GAO open recommendations that we will continue to
work with your staff to address.

We  are highlighting the following areas that warrant timely and focused action. Specifically:

Ensuring  cybersecurity at EPA.  Federal agencies face a growing number of threats to their
information technology systems and data. To protect against these threats, federal law and
policies establish that agencies should adopt a risk-based approach to cybersecurity by
effectively identifying, prioritizing, and managing cyber risks. The Environmental Protection
Agency  (EPA) has updated its cybersecurity risk management strategy but has not yet
implemented  GAO's  recommendation  that it establish a process for conducting an organization-
wide cybersecurity risk assessment. Without such a process, EPA risks not identifying emerging
trends that could impact its operations and hamper its ability to prioritize risk mitigation
investments, thus leaving the agency vulnerable to an increasing number of cyber threats.

In August 2024, EPA's Office of Inspector General found that the agency lacked fully
documented,  implemented, and  compliant IT procedures. Without such procedures, EPA cannot
ensure its information security program is protecting EPA systems or that its data adheres to
nationally recognized standards.

EPA  is also responsible for leading, coordinating, and supporting activities to reduce
cybersecurity risk in the water sector, which includes approximately 170,000 drinking water and
wastewater systems.  In August 2024, we made recommendations   to EPA to help it target its
efforts and more effectively address cybersecurity risk.2 For example, we recommended that
EPA  evaluate its legal authorities and identify and request any new ones that would be needed

1GAO considers a recommendation to be a priority if when implemented, it may significantly improve government
operations, for example, by realizing large dollar savings; eliminating mismanagement, fraud, and abuse; or making
progress toward addressing a high-risk or duplication issue.
2GAO, Critical Infrastructure Protection: EPA Urgently Needs a Strategy to Address Cybersecurity Risks to Water and
Wastewater Systems, GAO-24-106744 (Washington, D.C.: Aug. 1, 2024).


GAO-25-108095  Open Priority Recommendations


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