Being a "sworn police officer" does not make him automatically a grand human being or a good neighbor. The fact he is a police officer is entirely irrelevant to his character as a human being or as a neighbor. If he were an attorney, a minister, a councilman, or a used car salesman would you be characterizing him as any of those things? Do you always characterize your neighbors by their career? I rarely refer to my annoying neighbor behind me as "the retired planner," or the bickering neighbors as "the family of the electrical engineer."
It's sad that he behaves in the way you say he does, but you have apparently run into a brick wall with regards to your complaints and the actions that his employer or your city are willing to take against him. As such, perhaps moving would be the best thing for you. Hopefully your new neighbors and utilities will not be nearly so annoying.