Division of Environmental and Community Health

Maine Center for Disease Control & Prevention

A Division of the Maine Department of Health and Human Services

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Lead & Copper Rule Revision/Lead Service Line Inventories

Lead and Copper Rule Revisions / Lead Service Line Inventory

2020 revisions to the Lead and Copper Rule (LCR) represent the first major update to the LCR in nearly 30 years. “EPA’s new rule strengthens every aspect of the LCR to better protect children and communities from the risks of lead exposure. The new LCR will better protect children at elementary schools and child care facilities, get the lead out of our nation’s drinking water, and empower communities through information.”

Federal Lead and Copper Rule Revisions

EPA Service Line Inventory Guide (PDF)

Service Line Inventory Template (XLSX)

Financial Assistance for Service Line Inventories (PDF)


Frequently Asked Questions

View or download this information as a PDF

  1. Who must complete a Service Line Inventory (SLI)?
  2. When is the Service Line Inventory due?
  3. What must be included in the SLI?
  4. Which service lines are included?
  5. What are “unknown” service lines?
  6. What are non-lead service lines?
  7. What are galvanized service lines requiring replacement?
  8. Do goosenecks/pigtails need to be included in the inventory?
  9. Do lead goosenecks, pigtails, or connectors cause a service line to be classified as a lead service line under the LCRR?
  10. Do lead goosenecks, pigtails, or connectors cause a service line to be classified as a galvanized requiring replacement service line under the LCRR?
  11. Does the inventory include documenting lead fittings at the curb stop and the main?
  12. What format does the SLI need to be submitted in?
  13. How do I submit my inventory?
  14. Do I need to tell my customers about my inventory?
  15. What methods are available for determining the materials for unknown service lines?
  16. Can a PWS submit a statement that there are no lead service lines in lieu of an inventory?
  17. What if a PWS has no lead service lines and no galvanized service lines requiring replacement?
  18. Is there funding available to develop the SLI?
  19. Is there funding available to replace lead service lines?
  20. What is the LCRR definition of a lead service line?
  21. What is the LCRR definition of a gooseneck or pigtail?
  22. If a galvanized line is located downstream of a lead gooseneck, must it be classified as a “Galvanized Requiring Replacement” (GRR)?
  23. Are Community Water Systems responsible for determining service line material past the master meter in manufactured housing facilities, school campuses, hospitals, etc.?
  24. Can employees who’ve worked on the construction project of installing a main or service line verify now, from memory, the material that was put in or that they saw?
  25. Are tie cards adequate for identifying service line materials?
  26. Is a PWS required to verify its information is correct?
  27. Can statistical modeling be used, and if so, how?
  28. What type of identification methods are allowed?
  29. Can a PWS use funding to hire an intern or pay existing staff to go through data or our programmer to upgrade our database?
  30. Will there be a simple process to access those funding resources instead of formal loan/SRF/Capacity grant process?
  31. What year does the DWP find acceptable to help filter/classify service line in regard to lead ban of 1986?
  32. The Maine Plumbing Code from 1926 shows a lead ban for all service lines starting at that time. Does that mean that a PWS can automatically character all service lines from homes built after that date as non-lead?
  33. How should brass service lines be categorized?
  34. How should lead-lined service lines be categorized?
  35. What level of documentation is sufficient to call a service line “Non-Lead?”
  36. If a PWS has a well serving a single building, what should be reported?
  37. Is there a requirement to collect new information and update the inventory?
  38. Where can I find more information about the LCRR?

Updated 5/26/2023