Cal. Water Code § 21166.5

Notwithstanding the provisions of Section 21166, a director may participate in any plan for group insurance, group annuities, social security, medical and hospital service or any other authorized program which has been adopted and carried into effect for the benefit of all such officers and employees, including directors, as accept the same and authorize the board to make any necessary deductions from their compensation for payment of a portion of the premium thereon.