Hot tubs and spas in Tempe are regulated under the swimming pool code and ARS 36-1681. Spas with water over 18 inches deep require barrier protection. Electrical installations need a permit with GFCI protection. Lockable ASTM-compliant safety covers can serve as an alternative to barrier enclosure. Given Tempe's climate, hot tubs are popular year-round.
Tempe regulates hot tubs and spas under its swimming pool provisions and ARS 36-1681. Spas with water exceeding 18 inches deep require barrier protection identical to swimming pools (5-foot barrier, self-closing/self-latching gates). A lockable ASTM-compliant safety cover meeting weight-bearing standards can substitute for a separate barrier when the spa is not in use. Electrical installation requires a building permit and compliance with the National Electrical Code: 240V GFCI protection, proper bonding, and disconnect within sight but at least 5 feet from water. Hot tubs must observe zoning setbacks from property lines. Drainage must not affect neighboring properties. In Tempe's extreme summer heat, hot tubs may need temperature management to remain safe (water temperature should not exceed 104°F). Indoor installations need proper ventilation. Green (unmaintained) spa water is a code violation due to mosquito breeding concerns.
Non-compliant spa installations face enforcement under pool barrier requirements. Electrical violations may be red-tagged for immediate correction.
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Side-by-side rule comparisons with other cities in Maricopa County.
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