For some people, it makes sense to enter into a deferred prosecution after getting charged with a DUI in Washington. To qualify for a deferred prosecution, chemical addiction or alcoholism must play a significant part in why you broke the law. After acknowledging this, you must commit to a significant program of chemical dependency treatment. This program, and the court supervision that goes along with it, generally lasts for five years. If you complete your deferred prosecution, the court will dismiss the original DUI charge.