The City of Ontario Building Department requires every outdoor swimming pool, spa, or hot tub to be surrounded by a barrier at least 60 inches high with no more than a 2-inch gap at the bottom, self-closing and self-latching gates, and no climbable design features, in line with the California Swimming Pool Safety Act.
Ontario's Building Department handout 'Swimming Pools, Spas and Hot Tub Barriers' (rev. 1/16/2008) governs barrier design for single-family pools. The top of the barrier must be at least 60 inches above grade measured on the side facing away from the pool, and the maximum vertical clearance between grade and the bottom of the barrier is 2 inches (increased to 4 inches over an impenetrable solid surface such as a concrete deck). Where horizontal members are spaced less than 45 inches apart they must be on the pool side and the spacing between vertical members cannot exceed 1-1/4 inches; where horizontal tops are 45 inches or more apart, vertical spacing may be up to 4 inches. Pedestrian access gates must be self-closing and self-latching with the latch release placed not less than 60 inches from the bottom of the gate, and must swing away from the pool. Where a dwelling wall serves as part of the barrier, access doors must have either a self-closing/self-latching device with the release at least 54 inches above the floor or an audible door alarm. The barrier and alarms must be installed, inspected, and approved before the pool is plastered and filled. These local standards mirror the statewide Swimming Pool Safety Act (Cal. Health & Safety Code sections 115922-115923), which requires at least two of seven drowning-prevention features for new or remodeled pools.
The barrier, gates, and any required alarms must be installed, inspected, and approved before the pool is plastered and filled with water. The Building Department (303 E. B Street, 909-395-2023) will not pass final inspection on a pool whose enclosure fails the 60-inch height, 2-inch clearance, gate self-latching, or non-climbable requirements, and a non-compliant pool may be cited as a hazard.
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