Pool & Aquatic CenterDrainage Solutions

Pool decks typically require channel drains or trench drains positioned along the pool perimeter to capture splash-out and deck wash water. The drains must be NSF/ANSI 50 listed for swimming pool applications and feature slip-resistant, heel-safe grates. NDS Pro Series and ACO ShowerDrain lines offer popular options rated for pool environments.

The Virginia Graeme Baker Pool and Spa Safety Act (VGB Act) requires all public pool and spa drains to meet anti-entrapment standards. Drains must use ASME/ANSI A112.19.8 certified covers/grates with proper flow ratings. Single-drain pools require Safety Vacuum Release Systems (SVRS) or must use unblockable drain covers. This applies to main drains, not deck drains.

Stainless steel drains (304 or 316L grade) offer superior corrosion resistance in chlorinated environments and typically last 20-30 years versus 10-15 for polymer alternatives. While costing 2-3x more upfront, they require less maintenance and replacement. 316L stainless is recommended for saltwater pools or facilities with high chemical concentrations.

Competition pools require rapid drainage to prevent standing water that could affect timing equipment or create slip hazards. Perimeter channel drains should be sized for heavy splash-out during races. A minimum 4-inch wide channel is recommended, with 6-inch channels for Olympic-size pools. The deck should slope 1/4" per foot toward drains.

Locker rooms and pool showers require floor drains with integral traps to prevent sewer gas entry. These must be NSF-listed and feature removable strainers for cleaning. Linear shower drains are popular for barrier-free ADA compliance. All drains should handle the expected flow from multiple showers simultaneously.

Water parks require higher-capacity drainage due to continuous water flow from attractions. Splash zones need heavy-duty trench drains rated for pedestrian loads with rapid drainage. Wave pools require perimeter gutters sized for surge capacity. All drains must be highly slip-resistant and able to handle debris from high traffic.

Pool deck drainage typically connects to the storm sewer system, not sanitary. However, some jurisdictions require deck wash water (containing chlorine and cleaning chemicals) to go to sanitary or on-site treatment. Backwash and filter discharge usually must go to sanitary sewer. Always verify local codes and obtain proper permits.

Heel-safe grates with slots no wider than 1/4" or radius-edge slots are standard for pool decks. Wedge wire patterns provide excellent drainage while preventing entrapment. Grates should be ADA compliant with slots perpendicular to traffic flow. Anti-slip textures or coatings are recommended for wet environments.

Proper deck drainage helps manage indoor pool humidity by quickly removing standing water that would otherwise evaporate. Gutter overflow systems also control humidity by maintaining consistent water levels. Dehumidification systems work alongside drainage to maintain optimal air quality and prevent structural damage from condensation.

Pool deck drains should be inspected weekly and cleaned monthly at minimum. Remove debris from grates, flush drain lines, and check for proper flow. Chemical buildup should be removed with appropriate cleaners (not muriatic acid on stainless steel). Traps should be filled with water if infrequently used. Annual professional inspection is recommended.