California's Swimming Pool Safety Act covers above-ground pools deeper than 18 inches, requiring uniform drowning-prevention features and barriers regardless of pool type.
Health and Safety Code section 115921 defines a swimming pool to include any structure intended for swimming or recreational bathing that contains water more than 18 inches deep, including in-ground, above-ground, and on-ground pools, hot tubs, and spas. This means above-ground pools meeting the depth threshold must satisfy the same drowning-prevention requirements as in-ground pools when newly installed or substantially remodeled. Removable ladders alone are not sufficient; the pool must include at least two of the approved safety features, such as a barrier surrounding the pool or an approved safety cover. Inflatable and small portable pools below the depth threshold are exempt.
Installation without required features can result in permit denial. Drowning incidents create negligence liability. Removal orders possible if pool remains unpermitted.
See how Sonoma's above-ground pools rules stack up against other locations.
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