A hot tub or spa holding water over 24 inches deep is a regulated pool requiring a building permit and an insulated cover rated at least R-12. Public and semi-public spas must also meet Colorado's state health regulation, which requires spa water to turn over completely every 30 minutes.
For residential spas and hot tubs, Boulder County amendment N1190.6 requires "All spas must be equipped with an insulated cover that is listed to provide a minimum R-value of at least 12," and a small compliant spa may use an ASTM F1346 locking cover in place of a full barrier. Spas serving the public (HOA, resort, gym) also fall under Colorado's Swimming Pools and Mineral Baths regulation, 5 CCR 1003-5, which mandates a Certified Pool Operator and rapid water turnover. Home spas installed over 24 inches deep still need a county building permit and electrical bonding/GFCI protection.
A public spa operated without a certified operator or an uncovered residential spa is a code violation; state health inspectors may order a public spa closed until it complies.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Boulder County, CO
Boulder County has no separate 'hoarding' ordinance, but Ordinance 2022-8 makes it unlawful to fail to provide any livestock or domestic animal with minimum ...
Boulder County, CO
Boulder County residents may not intentionally feed big game or bears. Colorado Parks and Wildlife regulation and C.R.S. 33-6-131 make it illegal to intentio...
Boulder County, CO
Backyard composting is allowed and strongly encouraged in Boulder County. The county's Zero Waste program provides compost collection, but home compost piles...
Boulder County, CO
Boulder County sets no countywide ban on residential artificial turf. Colorado SB23-178 prevents HOAs from prohibiting nonvegetative turf grass, though droug...
Boulder County, CO
Boulder County encourages native and water-wise landscaping and imposes no lawn requirement on rural land. Colorado law (SB23-178) bars HOAs from banning xer...
Boulder County, CO
Under Colorado HB16-1005, Boulder County residents may collect rooftop rainwater in up to two rain barrels totaling no more than 110 gallons, for outdoor use...
See how Boulder County's hot tub rules rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.