When acoustic can't find it, tracer gas can.
| Factor | Leak.ca | Acoustic Correlation |
|---|---|---|
| System state | Depressurized, filled with tracer gas | Pressurized, water escaping creates sound |
| Leak size | Microscopic to large | Medium to large (needs pressure) |
| Complex plumbing | Excellent — works in branched systems | Limited — needs distinct pipe path |
| Best for | Low-pressure, complex piping, sensitive buildings | High-pressure, long runs, underground mains |