How to call the Health Department on the Apartments I am currently at?

My situation is I have roaches and their multiplying like crazy now and my landlord refuses to do anything about it since I turned in my 30 day notice a week ago. Their are people walking around the apartments late at night looking into other tenants apartments for no reason. My son got shot with a BB gun in the parking lot recently as well. We do plan on moving but in the meantime don't want history to repeat itself with future tenants. What should we do?