In Tennessee, public swimming pools are regulated by the Tennessee Department of Health (TDH) under Rule 1200-25-01 (and Rule 1200-01-04 for multi-family residential pools). Tennessee is a "Plan Review" state, meaning you cannot begin construction or a major remodel without first getting approval from the TDH Engineering Department.
As of 2026, Tennessee remains one of the few states that strictly mandates an audible motion-detector alarm in addition to standard physical barriers.
Tennessee follows the International Swimming Pool and Spa Code (ISPSC) with specific state-wide safety additions.
Height: The barrier must be at least 4 feet (48 inches) high around the entire perimeter.
Gate Security: Access gates must open outward (away from the pool), be self-closing, and self-latching.
Latch Height: The latch release must be at least 54 inches above the ground. If it is lower, it must be on the pool side, 3 inches below the top, and shielded so no holes larger than 1/2 inch are within 18 inches of the latch.
Mesh & Gaps: No opening (including the gap between the ground and the fence) may allow a 4-inch sphere to pass through. Chain-link mesh must be no larger than 1.75 inches square.
Unique to Tennessee, state law requires an audible pool alarm that detects a person entering the water.
Function: The alarm must be capable of detecting a child entering the water and sound an audible signal both at the pool and inside the residence or main building.
House Entry: If the wall of a house serves as part of the barrier, all doors leading directly to the pool must have an alarm that sounds immediately for 30 seconds. The keypad or deactivation switch must be at least 54 inches high.
Tennessee health inspectors perform rigorous testing for bacterial contamination.
Coliform Standards: A water sample is considered positive/unacceptable if it exceeds 4 total coliform bacteria per 100ml. If a sample is positive, the pool is typically shut down until it can be shocked and re-tested.
Standard Chemistry Ranges:
Free Chlorine: Minimum 1.0 ppm for pools; 3.0 ppm for spas.
pH Levels: Must be strictly maintained between 7.2 and 7.8.
Clarity: The water must be clear enough that the gratings of the main drain are clearly distinguishable from the pool deck.
The "Unit" of Gear: Public and HOA pools must have at least one unit of lifesaving equipment located within 25 feet of the water:
A 12-foot reaching pole (shepherd’s crook).
A U.S. Coast Guard-approved ring buoy with an attached throw line (minimum 3/4 inch diameter).
Emergency Telephone: A telephone must be "conveniently available" on the premises. As of 2026, cellular pool phones are widely used, provided they are hard-mounted and have emergency dialing instructions and the facility’s physical address posted next to them.
Depth Markers: Must be in numerals at least 4 inches high of a contrasting color. They are required at the maximum and minimum depths, at every 1-foot depth change in the shallow end, and at the "slope break."
No Diving: If the pool is not designed for diving, "No Diving" signs and universal symbols are required.
"No Lifeguard" Signage: For semi-public pools (hotels/HOAs), a sign stating "Warning: No Lifeguard on Duty" must be posted in 4-inch letters.
Tennessee Rule 1200-25-01 (Public Pool Operational Requirements): The full state legal text governing public aquatic facilities.
TDH Public Swimming Pool Plan Review Checklist (PDF): The official list used by state engineers to approve new construction.
Shelby County Health Department - Pool Safety: Local guidance for the Memphis area, including seasonal inspection tips.
Tennessee Hotel Rules & Inspections: Information for facilities providing lodging, which must follow both hotel and pool sanitation laws.
Note for 2026: In Tennessee, Gas Chlorination equipment has very specific storage rules. Cylinders must be securely fastened to a wall, and the enclosure must have a motor-driven exhaust fan capable of one air change per minute with switches located outside the room.
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