California Code, Health and Safety Code - HSC § 4741.4

The board of directors of a county sanitation district shall be the same for all district purposes, activities, and objectives, whether for collection, treatment and disposal of sewage or the acquisition and operation of a refuse transfer or disposal system, or both, and no director shall be excluded from the board of directors because the political subdivision which he represents on the board has excluded itself from the said refuse transfer or disposal system, or both.