Commissioners and employees of public utility districts shall be immune from civil liability for mistakes and errors of judgment in the good faith performance of acts within the scope of their official duties involving the exercise of judgment and discretion which relate solely to their responsibilities for electrical utilities. This grant of immunity shall not be construed as modifying the liability of the public utility district.

Severability—1983 1st ex.s. c 48: See note following RCW 35.21.415.