Fireworks are a Fourth of July tradition, but officials want to remind people that possessing and using them in Washoe County is illegal without a permit. While it may be legal to purchase fireworks in some locations outside of Washoe County and on Tribal Lands, it is illegal to possess, or manufacture, fireworks which includes the unincorporated areas of the County. illegal possession or use of fireworks can result in fines up to $1,000 and/or up to six months in jail for each offense.