A former Public Utilities Department leader is accusing the city of San Diego of illegally diverting $1 million in water and wastewater funds to other city services and firing her for refusing to conceal the activity, according to a claim she filed with the city on Monday. Susan LaNier, a former deputy director and internal auditor for the utilities department, was one of five utility leaders the city fired in February, following public outcry over billing errors and accusations of mismanagement within the department.