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Lead and Copper Rule Revisions

Service Line Inventory requirements in the Lead and Copper Rule Revisions (LCRR)

The Lead and Copper Rule applies to all Community (CWS) and Non-Transient (NTNC) public water systems. EPA adopted revisions to the Lead and Copper Rule in 2021 that include a requirement for public water systems to conduct inventories of service lines and to identify service line material type. The intent of the service line inventory requirement is to identify those service lines made of lead so that they can be scheduled for removal and replacement.

Public water systems must conduct an inventory of all service lines, on both the water system side and the homeowner side of the meter, and to submit the results to OHA–Drinking Water Services (DWS) by October 16, 2024.

 Frequently Asked Questions (FAQ) - Updated October 2023

 Statistical Guidance for Evaluating Unknown Service Lines (for Community public water systems only)

Inventory Templates

To submit your inventory, please email the Excel file to

Service Line Inventory Technical Assistance

Assistance is available from two organizations to assist your water system in completing and submitting the service line inventory. Information will be sent to water systems relaying contact information and how they can assist you with the inventory requirement. You can check the Excel file below to see your water system vendor information.

Funding Resources

Funding for conducting the service line inventory may be available through the Bipartisan Infrastructure Law (BIL). Public water systems first need to express interest. Interest can be submitted through this link:

If there is enough interest from public water systems, DWS may apply for the funds in 2024. Disadvantaged communities may be eligible for a portion of the loan as principal forgiveness, but exact subsidy amounts will not be determined until a project is deemed eligible and funding is applied for. In the meantime, water systems need to proceed with the inventory work. Point of contact in DWS is Amy Word at or 541-966-0901.

Information in this section will be updated as we receive additional details.  

Free Trainings and Webinars

ASDWA's free webinar series: Implementation Tools and Best Practices for Lead Service Line Inventories and Replacements. This is a series of six monthly sessions beginning November 10, 2022.  To register for these webinars, please click here.

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