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Report: Inadequate Execution of the 7th DWINSA Lead Service Line Questionnaire Led to Flawed Data Being Used to Allot Lead Service Line Replacement Funds

Report # 25-E-0002, October 21, 2024

Why We Did This Report

The U.S. Environmental Protection Agency Office of Inspector General conducted this evaluation to determine whether the design and execution of the 7th Drinking Water Infrastructure Needs Survey and Assessment were appropriate to create accurate allotments of infrastructure funds based on the lead-service-line-replacement needs in each state.
 

Summary of Findings

The design and execution of the 7th Drinking Water Infrastructure Needs Survey and Assessment did not result in allotments of lead service line, or LSL, funds that accurately reflected the LSL replacement needs in each state. The EPA used the responses to the survey’s supplemental LSL questionnaire to project how many LSLs each state had, a number that it then used to determine how to allot the approximately $2.8 billion of LSL replacement funds provided by the Infrastructure Investment and Jobs Act, or IIJA, for fiscal year 2023. The LSL questionnaire, however, was originally designed to only estimate LSL replacement costs, not to allot billions of dollars of IIJA LSL funds. As such, it lacked the rigorous internal controls needed to ensure data quality and reliability, and the EPA did not implement the needed internal controls after the purpose of the LSL questionnaire expanded.


Report Materials

  • PDF Icon At a Glance (pdf) (207 KB)
  • PDF Icon Full Report - 25-F-0011 (pdf) (1.37 KB)
  • Podcast Overview of This Report (mp3) (1.37 KB)
  • PDF Icon Podcast Transcript (1.37 KB)
  • News Release: The EPA OIG Identifies that Flawed Data Could Have Resulted in Nearly $1 Billion in Questionable Lead Service Line Allotments

OIG Independence of EPA

The EPA's Office of Inspector General is a part of the EPA, although Congress provides our funding separate from the agency, to ensure our independence. We were created pursuant to the Inspector General Act of 1978, as amended.

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OIG Hotline: 1-888-546-8740.

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Last updated on October 22, 2025
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