According to the Revised Code of Washington Section 70.77.255, no person – without the required licenses and permits – may manufacture, import, possess or sell any fireworks for any use. This includes for both private and public displays of fireworks. No person may discharge display fireworks at any location in Washington State except as authorized by a state license or city or county permit. The law prohibits anyone under the age of 18 from obtaining a firework license or permit.