Only 'permissible fireworks' under Colorado C.R.S. 12-28-101(8) - sparklers, ground spinners, fountains, and snakes - are legal in Colorado. All aerials, firecrackers, bottle rockets, and Roman candles are illegal statewide. Jefferson County's foothills face high wildfire risk, and Sheriff Reggie Marinelli routinely imposes Stage 1 or Stage 2 fire restrictions under C.R.S. 30-15-401(1)(n.7) banning all fireworks. The 2021 Marshall Fire region borders the county and underscores enforcement.
Colorado fireworks law sits at C.R.S. 12-28-101 et seq. C.R.S. 12-28-101(8) defines 'permissible fireworks' as small ground-based devices - cylindrical fountains, cone fountains, wheels, ground spinners, sparklers, snakes, and toy smoke devices - that do not explode or leave the ground. All other fireworks (aerials, mortars, firecrackers, bottle rockets, Roman candles, M-80s) are illegal in Colorado without a state display permit issued by the Division of Fire Prevention and Control under C.R.S. 12-28-103. C.R.S. 30-15-401(1)(n.7) authorizes counties to prohibit or restrict fireworks (including permissible fireworks) for up to one year in unincorporated areas. Jefferson County's western foothills (Evergreen, Conifer, Indian Hills, Golden Gate Canyon) are designated high wildfire risk, and the Jefferson County Sheriff's Office routinely issues Stage 1 fire restrictions (banning open burning, outdoor smoking, and the use of all fireworks) and escalates to Stage 2 (banning nearly all outdoor flame including charcoal grills and pellet smokers, with only propane and indoor fireplaces allowed). The December 2021 Marshall Fire (Boulder County, bordering Jefferson County) destroyed over 1,000 structures and reinforces the Sheriff's aggressive ban posture. Cities within Jefferson County (Lakewood, Arvada, Wheat Ridge, Golden) ban all consumer fireworks year-round under municipal ordinance.
Use or possession of non-permissible fireworks is a Class 3 misdemeanor under C.R.S. 12-28-110, punishable by up to a $750 fine and/or jail. Violation of a Sheriff's fire restriction under C.R.S. 30-15-401(1)(n.7) is a Class 2 petty offense subject to a fine. Causing a wildfire while violating a fire ban can be charged as fourth-degree arson under C.R.S. 18-4-105 and trigger civil liability for full suppression and damages costs.
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