The Phoenix Public Works Department primarily focuses on the management of waste produced by the industries and residents of Arizona s largest city. The Phoenix Public Works Department manages the following divisions: equipment, facilities, solid waste, collections, recycling contracts/education and disposal. The Phoenix Public Works Department assists Maricopa County, Ariz., in educating property owners about roof rats. However, the department is primarily responsible for garbage collection and disposal. Residents of Phoenix are urged to take advantage of the department's existing weekly garbage collection, quarterly bulk trash collection and free trash disposal at the city's solid waste disposal facilities on weekends. The Phoenix Public Works Department also works with neighborhood groups, such as Block Watch, to provide education and coordinate special clean-ups.