Making sense of GRR for LCRR: How galvanized service lines factor into Inventory requirements
For Service Line Inventories, water systems are required to identify galvanized-requiring-replacement (GRR) service lines in addition to Lead, Non-Lead, and Unknowns. Explore why GRR matters for public health, the EPA definition of GRR, and how to efficiently and accurately tackle GRR for your Service Line Inventory.