Cross bores can remain harmless and undetected for years, causing little to no disruption. However, potential dangers arise when a sewer backs up and needs to be unblocked. On rare occasions, a natural gas line has been punctured, causing gas to leak through sewer laterals. Some cases have resulted in millions of dollars in property damage, serious injury, and even death. In response, the TSSA mandated that all natural gas distributors incorporate an action plan to address cross bore risk.