Denton County, TX Swimming Pools & Spas: Hot Tub Rules (2026)

Hot tubs and spas in Denton County fall under Texas Health and Safety Code Chapter 757 when they are capable of holding water 18 inches or deeper. The law requires a barrier enclosure meeting the same 48-inch height and self-closing gate standards as swimming pools. However, many cities within Denton County, including Denton and Lewisville, allow a locking rigid safety cover that meets ASTM F1346 standards to serve as an acceptable barrier in lieu of a separate fence around the hot tub. The cover must be capable of supporting the weight of a small child without collapsing. Electrical installation for hot tubs requires a dedicated 240-volt GFCI-protected circuit installed by a licensed electrician. A disconnect switch must be located within sight of the spa and at least 5 feet from the water edge. Indoor hot tubs require adequate ventilation to prevent moisture damage and mold growth. Drain covers must comply with the Virginia Graeme Baker Act. Portable plug-in hot tubs under 18 inches of water depth may be exempt from permit requirements, but homeowners should verify with local building departments. HOA covenants in communities throughout Denton County frequently restrict hot tub placement to backyards and may require screening from neighboring properties.