Choosing Your Service Line Verification Method

Identifying unknown service line materials is a complex balancing act between cost, speed, and regulatory compliance. To manage this effectively, utilities should adopt a tiered strategy that prioritizes the least invasive options before committing to costly excavation. Low-cost methods like customer surveys, magnet test kits, and water quality sampling can rapidly reduce large numbers of unknowns with minimal disruption to the community.

When physical evidence is required, technology-driven approaches such as predictive modeling and statistical analysis leverage existing historical data and representative field inspections to classify infrastructure at scale. More definitive methods, including vacuum or mechanical excavation, remain vital tools but are best reserved for high-risk locations where other identification methods are unfeasible. By integrating diverse verification techniques into a customized plan, operators can maintain an accurate inventory while optimizing their budget and staffing resources. View the full practical guide for utility operators to refine your verification strategy.