Res 2016-032/Water Reuse Asset Management Plan

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City of San Marcos Water Reuse System Asset Management Plan The San Marcos reuse system was constructed steadily over the last fifteen years as the reuse system expanded to serve new customers. Figure 6.1 shows the investment profile for reuse facility and pipeline assets based on the asset replacement costs and cost - weighted age based on the replacement cost figures for all of the reuse systems. The average cost weighted age of the San Marcos reuse system is 13 years. The total replacement cost for the reclaim water line assets in the reuse system is estimated to be $6.6 million. The overall system is relatively young compared to other City water and wastewater infrastructure assets. Since most of the San Marcos system piping is PVC, the anticipated average useful life the San Marcos reuse system pipelines is over 100 years. Therefore, the San Marcos water reuse system should not require any major rehabilitation or replacement for years to come. The reuse system facility assets have a much shorter useful life expectancy and will likely require some rehabilitation or replacement within the next 10 years. Figure 6.2 and 6.3 plot all of the reuse system facility and pipeline assets based on their composite risk of failure scores and LOF /COF scores respectively. Since a similar scoring approach was used for the pipeline and facility assets their risk of failure scores can be compared to prioritize all system assets. Since the majority of assets fall into the low or medium risk categories, the system will generally require routine monitoring, inspections, and repairs with only isolated asset rehabilitation and replacement to address localized failure conditions. February 2016 Page 34