Making Sense Of GRR For LCRR: How Galvanized Service Lines Factor Into Inventory Requirements

By Elana Fox

The article discusses the compliance requirements for galvanized service lines in relation to the Lead and Copper Rule Revisions (LCRR) and the proposed Lead and Copper Rule Improvements (LCRI). Galvanized service lines, which can contain lead and release it into drinking water, pose similar health risks to lead pipes.

The LCRR specifically focuses on galvanized-requiring-replacement (GRR) service lines. These are galvanized lines that were historically located downstream of a lead service line. If a water system cannot provide evidence that a galvanized service line was never downstream of a lead service line, it must classify it as GRR and potentially replace it.

Funding for GRR replacements is limited to galvanized service lines that are known to have been downstream of lead. This means that water systems may face financial constraints when it comes to identifying and replacing GRR service lines.