Cal. HNC § 6866

An officer of the district, and any of its employees, shall not be interested directly or indirectly in any contract or transaction with the district or become surety for the performance of any contract made with or for the district upon bonds given to the district. An officer or employee of the district shall not receive any commission or thing of value, or derive any profit, benefit, or advantage directly or indirectly from or by reason of any dealings with or service for the district by himself or others, except as lawful compensation as such officer or employee. The violation of the provisions of this section by any such officer or employee works a forfeiture of his office or employment.