No member of the board of directors of a district management authority and no officer of an authority will be held civilly liable for any breach of his or her duties as such member or officer except for liability: (1) for acts or omissions not in good faith or which involve intentional misconduct or knowing violation of law, or (2) for any transaction from which such member or officer derived an improper personal benefit, or (3) for any malicious, willful or wanton act.