Michigan Code Exempts Covered Hot Tubs From Barrier Rules

Under Michigan Residential Code Appendix G (adopted via MCL 125.1504), spas and hot tubs equipped with a safety cover complying with ASTM F1346 are exempt from the four-foot barrier rule that otherwise applies to pools deeper than 24 inches. Without an approved cover, the standard barrier and gate requirements apply. Public spas at hotels and clubs are regulated under MCL 333.12521 with additional water quality, drain entrapment, and licensing rules. Electrical bonding and GFCI requirements under the National Electrical Code apply to all spa installations.

Code violations trigger civil fines, correction orders, and license actions for public spas under MCL 333.12525.