A galvanized service line that was either ever downstream of a lead service line (LSL) or is currently downstream of a service line classified as “status lead unknown service line” under the Lead and Copper Rule Revisions (LCRR). Galvanized service lines downstream of lead goosenecks, pigtails, or connectors are not considered GRR unless there was a lead service line previously located between the connector and the galvanized pipe.
« Back to GlossaryHome » Galvanized Requiring Replacement (GRR)