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Service Line Inventory Introduction: Service line inventories are the foundation for Lead and Copper Rule Revision compliance. The first preliminary inventory is due on October 16, 2024. Establishing an inventory of service line materials and identifying the location of any LSLs is a key step in getting them replaced and protecting public health. The service line inventory is also the first step to eventually prove and certify that your system is free of lead service lines. California utilities must build upon their utility service line inventories that were already submitted to the Department of Drinking Water by characterizing customer side service line material and submitting an updated combined inventory that adheres to the specifications of the EPA and Division of Drinking Water by October 16, 2024. A comprehensive and accurate inventory has many additional benefits beyond regulatory compliance. Inventorying service line material permits notification to consumers about potential lead risks affecting them, which can facilitate customer actions to reduce lead in drinking water, including flushing, use of filters certified to reduce lead, and customer -initiated LSLR. Inventories allow water systems to publicly track their progress on LSL identification and replacement, engaging the community and enhancing transparency. Inventories can also help water systems and consumers determine the source of high lead levels in drinking water at a home or building and the possible solutions for reducing exposure. Inventories can also make LSLR programs more efficient. Even incomplete inventories may create cost -saving opportunities for water systems by better targeting locations served by LSLs, stretching the value of internal or external funding that water systems receive, such as from the BIL. In addition, service line inventories can help inform decisions for other drinking water rules and could inform future needs surveys and potential future costs. Objectives: The LCRR requires CWSs and NTNCWSs to develop a publicly available service line inventory that includes material classifications (Lead, Galvanized Requiring Replacement (GRR), Non -Lead, or Lead status unknown) of all service lines connected to a public water distribution system (40 CFR §141.84(a)(2)). This inventory must define service line ownership, and where dual ownership applies, materials must be defined on both the PWS and customer portion of the line to accurately provide a single classification per service line. The City of Santa Ana and 120Water are entering into an agreement to collaborate and develop a Preliminary Service Line Inventory. A Preliminary Service Line Inventory or Records Based Inventory, is an initial evaluation of all records that are publically available and widely available within the Utility. Establishing a Preliminary Service Line Inventory is the first step in achieving compliance with Revised Lead and Copper Rule. The objective of this scope of work is to establish a Preliminary Service Line Inventory within the defined term duration.