CALIFORNIA WATER SERVICE GROUP

Due to terrorism and other risks, we have heightened security at our facilities and have taken added precautions to protect our employees and the water delivered to customers. In 2002, federal legislation was enacted that resulted in new regulations concerning security of water facilities, including submitting vulnerability assessment studies to the federal government. We have complied with regulations issued by the EPA pursuant to federal legislation concerning vulnerability assessments and have made filings to the EPA as required. In addition, communication plans have been developed as a component of our procedures.

In accordance with the 2018 America’s Water Infrastructure Act, we are required to conduct additional risk and resilience assessments (RRAs) and develop emergency response plans (ERPs) for each of our water systems. These RRAs and ERPs include natural hazards as well as malevolent acts. There are 3 tiers of RRA and ERP certification deadlines which are based on system population. The first such assessments were completed in 2020 and 2021. Since the RRAs are scheduled to be reviewed and resubmitted every five years, Cal Water completed workshops and recertified the tier 1 and tier 2 system RRAs and tier 1 system ERPs in 2025. We expect to complete additional workshops and recertification of the tier 3 RRA and tiers 2 and 3 ERPs in 2026 in accordance with the schedule required by the EPA.

While we do not make public comments on our security programs, we have been in contact with federal, state, and local law enforcement agencies to coordinate and improve our water delivery systems’ security.