| Description: |
This measure shows the linear footage of large diameter (24 and larger) transmission mains that were surveyed for leaks or to determine pipe wall condition during the particular time period. It is an indicator of the effectiveness of the Utilitys asset management program as it pertains to condition assessment. High numbers indicate large portions of the transmission system being checked for leaks and condition. It is important to survey transmission mains for leaks because these leaks can go undetected for long periods of time, resulting in large water losses, as well as the potential for smaller, undetected leaks to progress to larger, catastrophic failures that lead to property damage and interruption of service. It is important to survey transmission mains to determine pipe wall condition in order to prevent catastrophic failures and to more efficiently manage the Utilitys pipe replacement and rehabilitation program as part of the overall asset management. |