California Code, Water Code - WAT § 30547

(a) A district may employ a suitable security force. The employees of the district that are designated by the general manager as security officers shall have the authority and powers conferred by Section 830.34 of the Penal Code upon peace officers. The district shall adhere to the standards for recruitment and training of peace officers established by the Commission on Peace Officers Standards and Training pursuant to Title 4 (commencing with Section 13500) of Part 4 of the Penal Code.

(b) Every security officer employed by a district shall conform to the standards for peace officers of the Commission on Peace Officers Standards and Training. Any officer who fails to conform to those standards shall not have the powers of a peace officer.