10/15/2024 

Fullerton has completed the Lead Service Line Inventory (LSLI) required by U.S. Environmental Protection Agency's (EPA) Lead and Copper Rule Revisions (LCRR). The deadline for the LSLIs is October 16, 2024.

Through completing a historical records review and field investigations, Fullerton has determined it has no lead or galvanized requiring replacement service lines in its distribution system. This includes any privately-owned or customer-owned service lines.

Fullerton reviewed all applicable sources of information, including:

• Available plumbing codes to assess historical regulation of lead service lines locally (e.g. National Lead Ban, State Codes, County Codes, the Codes and Standards of the incorporated cities before the statewide lead ban in 1986 including Fullerton’s lead ban from 1951 through 1955).
• Available City of Fullerton plumbing permits dated as early as 1930, which provided detailed information such as the building address, owner, permit number/inspection records, and contractor name.
• Water system records which indicate the service line materials, customer data, tax assessor records, county parcels, historical capital improvement or master plans, and standard operating procedures including Fullerton service line installation standards adopted in 1962.
• Water distribution system records which indicate the service line materials, GIS, distribution system maps and drawings, as-builts, historical lead and copper tap sampling results from 2002-2021, meter installation records, work orders, inspections conducted during the course of normal operations including 465 service line inspection records.

In addition to reviewing the above sources of information, Fullerton used an alternative method to develop the LSLI that was approved by the State Water Resources Control Board Division of Drinking Water on a case-by-case basis.

Fullerton used indirect interpolation and stratified random sampling approaches to develop the LSLI. Both approaches involve physically inspecting a representative subset of service lines to confirm non-lead materials, with the indirect interpolation approach being more suitable for homogeneous communities. The subset is stratified or divided into groups based on certain characteristics (e.g., years the service lines were installed). Stratification allows for a sample or subset of service lines to be more representative of the service lines in the distribution system.

After investigating the subset of service lines, if no lead or galvanized requiring replacement service lines are discovered, the remaining service lines may be assumed non-lead with a certain level of confidence. Fullerton inspected 863 sites on the utility-side only, 1,280 sites on the customer-side only, and 992 sites on both sides, and the service lines inspected were found to be non-lead. No lead or galvanized requiring replacement service lines were identified.

Fullerton intends to document service line material information obtained from normal operations, such as service line maintenance, after October 2024 and will update the LSLI accordingly.

 Please visit the EPA's Revised Lead and Copper Rule website to learn more information.

I you have any questions regarding the City of Fullerton's Lead Service Line Inventory please send all questions to waterquality@cityoffullerton.com.