The U.S. Environmental Protection Agency released two guidance documents intended to assist public water systems with compliance under the Lead and Copper Rule Improvements (LCRI) for identifying and replacing lead service lines. The Service Line Inventory Tips and Access Tips guides convert existing federal requirements into plain-language steps and include worked examples to reduce uncertainty for utilities and state primacy agencies. EPA opened the documents for public comment in April 2026 and finalized them in August 2026. The guidance is designed to aid implementation and does not alter regulatory deadlines or obligations.
Under the LCRI, water systems completed an initial inventory of service line materials in October 2024. A baseline inventory update is due by November 1, 2027, followed by annual updates thereafter. Most systems have until December 31, 2037 to resolve any service lines still classified as “unknown.” These timelines remain the governing milestones for inventory and replacement planning.
The inventory guidance outlines acceptable evidence sources beyond direct visual inspection that can be used to classify service line materials. Examples include construction and plumbing code records, documented statements from experienced water system personnel, and statistical or predictive modeling. The document notes that AI-based predictive models may be used when a state primacy agency approves their application. It also explains documentation approaches for evaluating historical materials at scale.
The guidance further clarifies how to determine whether a galvanized service line is not “galvanized requiring replacement.” Systems can make this determination by demonstrating the line was never downstream of lead, supported by neighborhood-level records. Examples include historical local ordinances that prohibited lead pipe installation during specific construction periods or other contemporaneous records that show material practices.
The separate access guidance addresses how to proceed when a system cannot physically reach or otherwise replace a service line. The LCRI requires replacement of lead and galvanized requiring replacement lines that are under the control of the water system. Each system is responsible for determining and documenting when it lacks control, and for maintaining records that substantiate access limitations.
EPA identifies common barriers such as a property owner declining consent after a documented “reasonable effort,” defined as four contact attempts using at least two communication methods. Other examples include local ordinances that restrict excavation to coincide with water main projects or state laws that require the use of state-contracted crews operating on fixed schedules. The guidance provides documentation practices for these scenarios.
Worked examples in the access guidance show how systems can remain in compliance while barriers persist by recording the limitation and periodically reassessing access. The documents emphasize updating records as circumstances change, including when new funding becomes available or when ordinances or scheduling constraints expire. The intent is to support steady progress toward full replacement while meeting reporting requirements.
These publications accompany a broader EPA effort focused on lead in drinking water during 2026. Related actions include a redesigned lead information hub, development of a children’s health StoryMap, and continued assistance through the Real Water Technical Assistance program. EPA reports that these efforts are part of nearly three billion dollars announced in 2026 to support lead service line identification and removal nationwide.
