For any action taken or any proceeding held under this Chapter or under color of law, except for gross negligence or willful or wanton misconduct, the department, when acting in its official capacity, shall be immune from liability and suit to the same extent that any judge of any court of general jurisdiction in this state would be immune.
Ga. Comp. R. & Regs. R. 290-1-6-.07
O.C.G.A. Sec. 31-2-6.