Block 1

Lead in Drinking Water

Minimizing lead and copper in drinking water has been a regulatory challenge ever since EPA published the Lead and Copper Rule (LCR) in 1991. The rule established a maximum contaminant level goal (MCLG) of zero for lead in drinking water and a treatment technique to reduce corrosion of lead and copper within the distribution system. Since 1991, EPA and states have taken action to increase compliance with the LCR, update the rule to reflect new research and best practices, and better protect public health. The most recent federal action is a major update to the LCR, finalized in January 2020, known as the Lead and Copper Rule Revisions (LCRR).

Block 2


ASDWA Lead Service Line Inventory Framework

ASDWA worked with the Lead Service Line Inventory Workgroup to develop the State Implementation Framework for Lead Inventory Requirements under EPA’s Lead and Copper Rule Revisions (LCRR) and Template for CWS and NTNC Systems. The purpose of this framework and template is to provide useful and consistent information to primacy agencies, water systems, and consultants to start the development of lead service line inventories while EPA develops inventory guidance. The intent of this framework is to serve as a prequel for EPA’s Inventory Guidance and to ensure that everyone is working off the same information when starting inventories. The inventory template is intended to be used by states and water systems as a starting point for inventory development and data collection.


Download ASDWA's LSLI Framework

Download the CWS and NTNC Systems Template

ASDWA’s LCRR News Feed

ASDWA publishes content covering various areas of the drinking water program.

Learn More

Proposed Lead and Copper Rule Improvements Submitted to Office of Management and Budget for Approval

September 6th, 2023 Ashley Voskuhl The National Primary Drinking Water Regulations (NPDWR) for Lead and Copper: Improvements (LCRI) were submitted by EPA to the President's Office of Management and Budget (OMB) for review on August 31, 2023. EPA has reiterated that the Agency plans to release the proposed LCRI by October 2023, with the intent to promulgate a final regulation…

EPA OIG Recommends Interim Measures for Public Notification of Lead Action Level Exceedances

July 21st, 2023 Ashley Voskuhl On July 20, 2023, EPA's Office of Inspector General (OIG) issued a memorandum to EPA's Office of Water (OW) regarding the implementation of the Tier 1 public notification provision following the determination of an action level exceedance, as required under the Water Infrastructure Improvements for the Nation (WIIN) Act passed  in 2016. While OIG acknowledges…

EPA Releases Two Guidance Documents for Small System Compliance with Lead Service Line Inventories

June 28th, 2023 Ashley Voskuhl   Today (6/28), EPA released two documents to support water systems, particularly small water systems, in complying with the Lead and Copper Rule Revisions (LCRR) lead service line initial inventory requirements. EPA’s Small Entity Compliance guide helps explain the inventory related actions small community and non-transient non-community water systems are required to take under the…