5 rules for unincorporated Prince William County, Virginia.
Verified from official government sources
In Prince William County, a building permit is required for any residential pool larger than 150 square feet, holding more than 5,000 gallons, or deeper than 24 inches. Lighting, heaters, and fill lines need separate electrical, mechanical, gas, or plumbing permits.
PWC Building Development Division, Residential Pools, Spas & Hot Tubs Barrier & Safety Requirements (Permits)
All pools with a surface area greater than 150 square feet, hold more than 5,000 gallons, or are deeper than 24", will require a Building Permit.
Every residential pool, spa, and hot tub must have a code-compliant barrier at least 48 inches high, measured on the side facing away from the pool. Openings may not pass a 4-inch sphere, and ground clearance under the barrier is capped at 2 inches over grass.
PWC Residential Pools, Spas & Hot Tubs Barrier & Safety Requirements (Height and Clearances)
The top of the barrier shall be at least 48" above grade, measured on the side of the barrier which faces away from the swimming pool... Openings in the barrier shall not allow passage of a 4 inch-diameter sphere.
Pool access gates must open outward, be self-closing, and self-latching. If the latch release is under 54 inches from grade, it must sit on the pool side at least 3 inches below the top of the gate. Public pools must post daily water-quality results.
PWC Residential Pools, Spas & Hot Tubs Barrier & Safety Requirements (Access Gates and Latches)
Pedestrian access gates shall open outward away from the pool and shall be self-closing and have a self-latching device. Where the release mechanism of the self-latching device is located less than 54 inches from grade... The release mechanism shall be located on the pool side of the gate at least 3 inches below the top of the gate.
Above-ground pools follow the same thresholds as in-ground pools: a building permit is required once the pool exceeds 150 sq ft, holds over 5,000 gallons, or is deeper than 24 inches. Where a barrier mounts on the pool structure, clearance under it is capped at 4 inches.
PWC Residential Pools, Spas & Hot Tubs Barrier & Safety Requirements (Height and Clearances)
Where the barrier is mounted on top of the pool structure, the maximum vertical clearance between the top of the pool structure and the bottom of the barrier shall be 4 inches.
Hot tubs and spas must have a code-compliant ISPSC barrier, but Prince William County allows a lockable safety cover meeting ASTM F1346 to serve as the barrier for a hot tub. Powered safety covers meeting ASTM F1346 may substitute for a pool barrier.
PWC Residential Pools, Spas & Hot Tubs Barrier & Safety Requirements (General / Exception)
A powered safety cover that complies with ASTM F 1346 may serve as the barrier for pools. A lockable safety cover that complies with ASTM F1346 may serve as the barrier for hot tubs.
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