Cal. Pub. Util. Code § 130545
The bonds issued pursuant to this chapter are legal investments for all trust funds, the funds of all insurance companies, commercial or savings banks, trust companies, savings and loan associations, and investment companies, for executors, administrators, guardians, conservators, trustees, and other fiduciaries, for state school funds, and for any funds which may be invested in county, municipal, or school district bonds. The bonds are securities which may properly and legally be deposited with, and received by, any state or municipal officer or any public agency for any purpose for which the deposit of bonds or obligations of the state is now, or may hereafter be, authorized by law, including deposits to secure public funds.
Ca. Pub. Util. Code § 130545