Cal. Public Utilities Code - PUC § 125600. Section 125600.
The district may establish and maintain a police force. Those employees of the district appointed by the executive director to the police force and who are duly sworn are peace officers, subject to Section 830.33 of the Penal Code. The district shall comply with the standards for recruitment and training of peace officers established by the Commission on Peace Officer Standards and Training pursuant to Title 4 (commencing with Section 13500) of Part 4 of the Penal Code.