The U.S. Environmental Protection Agency released two guidance documents intended to help public water systems meet lead service line requirements under the Lead and Copper Rule Improvements. Titled Service Line Inventory Tips and Access Tips, the documents translate existing federal requirements into plain language and include worked examples to reduce confusion for utilities and state regulators. EPA opened both documents for public comment in April 2026 and finalized them in August 2026 as part of a broader effort that pairs guidance with technical assistance and available funding.
The guidance reiterates key deadlines established by the LCRI. Systems completed their initial service line material inventories in October 2024. A baseline inventory update is due by November 1, 2027, with annual updates required thereafter. For most systems, any service lines still categorized as "unknown" must be resolved by December 31, 2037.
The Service Line Inventory Tips document details acceptable evidence sources beyond direct visual inspection to classify service line materials. It points to construction and plumbing code records, documented statements from experienced water system personnel, and statistical or predictive modeling, including AI-based approaches, when approved by the state primacy agency. The intent is to help utilities move unknowns to a defined material category using verifiable, state-accepted methods.
The inventory guidance also clarifies how to determine whether galvanized pipe qualifies as "galvanized requiring replacement." A line can be shown not to require replacement if evidence demonstrates it was never downstream of a lead line. Acceptable documentation may include neighborhood-level records such as historic local ordinances that banned the installation of lead pipe for homes built during specified periods.
The Access Tips document addresses circumstances in which a water system cannot physically reach or otherwise control a service line segment for replacement. While the LCRI requires replacement of lead and galvanized-requiring-replacement lines under the control of the water system, each system must determine and document when it lacks that control and the reasons why.
Common access barriers cited in the guidance include the following examples:
- A property owner refuses consent after a documented "reasonable effort," defined as four contact attempts using at least two different communication methods.
- A local ordinance restricts excavation to coincide only with water main construction work.
- A state law requires use of state-contracted crews that operate on a fixed schedule.
The document uses worked examples to show how systems can remain in compliance when such barriers exist. Utilities are advised to continue reporting the barrier, maintain documentation, and periodically reassess access as circumstances change, such as when new funding becomes available or when a limiting ordinance expires.
EPA positioned the new guidance alongside other lead-in-drinking-water initiatives launched this year, including a redesigned lead information hub and a new children’s health StoryMap. The agency also highlighted continued support through the Real Water Technical Assistance program, as part of nearly $3 billion announced in 2026 for identifying and removing lead service lines.
