Lead and Copper Rule Improvement (LCRI) – Service Line Inventory Requirements

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Understand your responsibilities under the EPA’s new rule and how to stay compliant by 2027

What is the Lead and Copper Rule Improvement (LCRI)?

On Oct. 8, 2024, the U.S. EPA issued the LCRI, requiring all community and non-transient non-community (NTNC) water systems to develop and submit a comprehensive baseline inventory of service lines and connectors by Nov. 1, 2027.

What You Need to Do

  • Baseline Inventory
    • Classify each service line and connector
    • Include both public and private portions
    • Submit by Nov. 1, 2027
  • Public Notification
    • Notify affected customers within 30 days
    • Post inventory online (if serving >50,000 people)
    • Include info in Consumer Confidence Reports
  • Annual Updates
    • Begin Jan. 30, 2029
    • Include material counts and replacements
  • Inventory Validation
    • Validate a subset of non-lead lines by December 31, 2034
  • Replacement Plan
    • Submit Lead Service Line Replacement Plan (LSLRP) by Nov. 1, 2027

Understand your responsibilities under the EPA’s new rule and how to stay compliant by 2027

What is the Lead and Copper Rule Improvement (LCRI)?

On Oct. 8, 2024, the U.S. EPA issued the LCRI, requiring all community and non-transient non-community (NTNC) water systems to develop and submit a comprehensive baseline inventory of service lines and connectors by Nov. 1, 2027.

What You Need to Do

  • Baseline Inventory
    • Classify each service line and connector
    • Include both public and private portions
    • Submit by Nov. 1, 2027
  • Public Notification
    • Notify affected customers within 30 days
    • Post inventory online (if serving >50,000 people)
    • Include info in Consumer Confidence Reports
  • Annual Updates
    • Begin Jan. 30, 2029
    • Include material counts and replacements
  • Inventory Validation
    • Validate a subset of non-lead lines by December 31, 2034
  • Replacement Plan
    • Submit Lead Service Line Replacement Plan (LSLRP) by Nov. 1, 2027

FAQs

Do you have questions about the upcoming deadlines, documentation or requirements? Please submit them and our team will work to get you answers.

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  • Share What if I already submitted an inventory in 2024? on Facebook Share What if I already submitted an inventory in 2024? on Twitter Share What if I already submitted an inventory in 2024? on Linkedin Email What if I already submitted an inventory in 2024? link

    What if I already submitted an inventory in 2024?

    3 months ago

    If you have already submitted an LCRI inventory in 2024, the EPA is proposing to keep the LCRR compliance date for the initial inventory, notification of service line material, Tier 1 public notification of a lead action level exceedance, and associated reporting requirements. 

    The initial service line inventory was due to NHDES on Oct. 16, 2024, and the LCRI requires the baseline inventory to report connector material and track lead service line replacements. If you have not already submitted your LSLI, instructions on using the submission portal can be found.

  • Share What qualifies as a “lead status unknown” line? on Facebook Share What qualifies as a “lead status unknown” line? on Twitter Share What qualifies as a “lead status unknown” line? on Linkedin Email What qualifies as a “lead status unknown” line? link

    What qualifies as a “lead status unknown” line?

    3 months ago

    A "lead status unknown" line is a service line for which the material classification is not known. Water systems must notify customers whose service lines are categorized as "lead", "galvanized requiring replacement", and "lead status unknown" to inform them of the potential dangers of lead exposure.

Page last updated: 24 Jul 2025, 01:41 PM