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the claim

Millions of lead service lines are still in use in US drinking water systems.

the verdict
INSUFFICIENT LEANING
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that millions of lead service lines are still in use in US drinking water systems?

Unclear. Several sources confirm that lead service lines remain in use in US drinking water systems and that EPA regulations require their replacement, but none provides a count establishing that millions are still in use.

Verdict: PARTIAL LEAN · 6 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 6
High-precision Pb isotopes of drinking water lead pipes: Implications for human exposure to industrial Pb in the United States
2023
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High-precision Pb isotopes of drinking water lead pipes: Implications for human exposure to industrial Pb in the United States. (2023). doi.org. https://doi.org/10.1016/j.scitotenv.2023.162067

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More for · 5
Door Hangers and Incentives Induced Little Participation in Lead Water Pipe Inspections.
2025
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L, G., H, K., B, P., & A, W. (2025). Door Hangers and Incentives Induced Little Participation in Lead Water Pipe Inspections.. doi.org. https://doi.org/10.1002/aws2.70019

National Primary Drinking Water Regulations for Lead and Copper: Improvements (LCRI)
2024
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National Primary Drinking Water Regulations for Lead and Copper: Improvements (LCRI). (2024). federalregister.gov. https://www.federalregister.gov/documents/2024/10/30/2024-23549/national-primary-drinking-water-regulations-for-lead-and-copper-improvements-lcri

National Primary Drinking Water Regulations for Lead and Copper: Improvements (LCRI)
2023
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National Primary Drinking Water Regulations for Lead and Copper: Improvements (LCRI). (2023). federalregister.gov. https://www.federalregister.gov/documents/2023/12/06/2023-26148/national-primary-drinking-water-regulations-for-lead-and-copper-improvements-lcri

Reaction to the Solution: Lead Exposure Following Partial Service Line Replacement
2010
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Reaction to the Solution: Lead Exposure Following Partial Service Line Replacement. (2010). doi.org. https://doi.org/10.1289/ehp.118-a202

Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Lead
2021
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Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Lead. (2021). open.canada.ca. https://open.canada.ca/data/en/dataset/7755ed80-a363-4bf1-b35f-878ea98c2822

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