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Lead Service Line Information

Lead Service Line Community Updates

Effective January 1, 2022, the Lead Service Line Replacement and Notification Act (LSLRNA) (Public Act 102-0613) replaced the former lead materials inventory requirements found in the Illinois Environmental Protection Act at 415 ILCS 5/17.11.  

The first purpose of the LSLRNA is to require owners and operators of community water supplies to develop, implement, and maintain a comprehensive water service line material inventory and replacement plan.  The lead service line replacement and notification requirements can be found at 415 ILCS 5/17.12.  A well-developed materials inventory will allow communities to be able to prioritize and strategize the replacement of known lead service lines within their water distribution system.

Lead Service Line Inventory Grant Opportunity

Material Inventory Requirements

The material inventory shall identify:

  • The TOTAL number of service lines in the community water supply (CWS);
  • The material of EACH service line connected to the CWS's distribution system;
  • The number of suspected lead service lines that have been identified since the last material inventory was submitted; and

  • The number of suspected or known lead service lines that were replaced since the last material inventory was submitted

Additionally, to the best of the CWS’s ability, the CWS shall identify the service line, which means the piping, tubing, and necessary appurtenances acting as a conduit from the water main or source of potable water supply to the building plumbing at the first shut-off valve or 18 inches inside the building, whichever is shorter.

When completing the material inventory, the owner or operator shall at a minimum:

  • Prioritize the inspection of high-risk areas idendified;
  • Review historical documents to determine service ine material;
  • Visually inspect service lines and document material when doing maintenance;
  • Identify any time period service lines would have been connected to the distribution system and were primarily lead service lines; and

  • Discuss service line repairs and installation with other employees, contractors, plumbers, and other workers who worked on service lines connected to the CWS.

THERE IS NO REQUIREMENT TO UNEARTH SERVICE LINES FOR THE PURPOSE OF INVENTORYING.

IMPORTANT MATERIAL INVENTORY DATES TO REMEMBER:

  1. The INITIAL Material Inventory is required to be developed by April 15, 2022.
  2. The INITIAL Material Inventory is required to be electronically submitted to the Illinois EPA by April 15, 2023.
  3. The COMPLETE Material Inventory is required to be submitted to the Illinois EPA no later than April 15, 2024.

Lead Notification Tools

Summary of Public Water Supply Service Line Material Inventories

Summary Data for 2020 Reporting Year - Updated Jan. 14th 2022.

  • 1,756 of 1,758 Community Water Supplies have reported inventory information.
  • Of the 3,852,509 total services lines reported, the material inventory breakdown is as follows:

    SERVICE LINE MATERIAL REPORTED SERVICE LINES
    Lead
    		 667,275
    Unknown Material 819,586
    Copper with Lead Solder
    		 367,756
    Galvanized
    		 62,958
    Unknown, but NOT Lead
    		 242,767
    Copper without Lead Solder 1,378,454
    Cast/Ductile Iron or Transite
    		 38,223
    Plastic
    		 275,490

Agency Contacts

Any questions regarding Lead Service Line Replacement Requirements and/or Lead Service Line Inventory requirements can be directed to the IEPA's Division of Public Water Supplies Compliance Assurance Section Staff at:

Illinois  Environmental  Protection  Agency
Division of Public Water Supplies Compliance Assurance Section
1021 North Grand Avenue East
P.O. Box 19276
Springfield, Illinois 62794-9276
Email:  EPA.LeadandCopper@illinois.gov
Phone: (217) 785-0561

Service Line Material Inventory Reports

Facility Id Facility Name County Total Connections Report Date Reporting Year

* In 2023, “Galvanized” is no longer a requested field. Instead, it has been split into “Galvanized Requires Replacement” and “Galvanized not Requiring Replacement.” If a galvanized service line is or has ever been connected downstream to lead, it should be classified as “Galvanized Requiring Replacement.”