Baltimore County has no separate private hot-tub ordinance; private spas follow the same building/barrier code as pools. Public and semipublic spas are regulated by Maryland COMAR 10.17.01, which requires compliance with the American National Standard for Public Spas and a certified operator.
For private residential spas and hot tubs, Baltimore County applies the same building code adopted under Bill 49-24 (2021 International Swimming Pool and Spa Code) and the pool barrier/electrical rules; the county sets no separate private hot-tub ordinance. For public and semipublic spas, Maryland regulates directly under COMAR 10.17.01.14: an owner shall ensure that an existing, newly built, or altered public spa complies with this chapter, applicable State and local codes, and the American National Standard for Public Spas. A swim spa must have clearly identified swim-jet controls and an accessible shut-off switch, and a spa hydrojet circulation system must not connect to the filtration system and must have a shut-off switch. Public spas must also meet the barrier standards
Private spa violations are enforced through PAI permit/inspection like pools. Public-spa violations are enforced by the Maryland Department of Health / local health department under COMAR 10.17.01; a major violation is one that, if not corrected within 24 hours, could
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