What the Hotel Was Required to Do—and What It Means if It Didn't
Premises liability law generally asks an owner or operator to keep a property reasonably safe for invitees. For a hotel pool, that duty usually includes inspecting the pool, deck, gates, barriers, drains, lighting and equipment; maintaining them so they work as intended; fixing hazards the business knows or reasonably should know about; and warning guests of hazards that are not obvious, such as water depth. How each duty is phrased and applied comes from the law of the state where the pool is located; more on how these duties work is on the site's page on pool owner liability.
Supervision is a separate question. Congress has found, in 15 U.S.C. § 8001, that "Adult supervision at all aquatic venues is a critical safety factor in preventing children from drowning," and that barriers or fencing, along with additional layers of protection, could substantially reduce childhood residential pool drownings and near drownings. Where a hotel provides lifeguards, a claim may raise negligent supervision: the allegation that the people responsible for watching swimmers did not watch with reasonable care. Those questions often turn on how many guards were on duty, where they were positioned and whether they were paying attention. Whether a hotel had to provide a lifeguard at all is a question of state and local law.
Federal law adds specific requirements about drains. Under 15 U.S.C. § 8003, part of the Virginia Graeme Baker Pool and Spa Safety Act, each "public pool and spa" must be equipped with anti-entrapment devices or systems that comply with the ASME/ANSI A112.19.8 performance standard or any successor standard. The definition of public pool and spa expressly includes a pool or spa open exclusively to patrons of a hotel or other public accommodations facility. A public pool or spa with a single main drain other than an unblockable drain must also have at least one of these: a safety vacuum release system, a suction-limiting vent system with a tamper-resistant atmospheric opening, a gravity drainage system using a collector tank, an automatic pump shut-off system, a device or system that disables the drain, or another system the Consumer Product Safety Commission determines is equally effective or better. Separately, 16 C.F.R. § 1450.3 generally requires pool and spa drain covers manufactured, distributed or entered into commerce in the United States to conform to the entrapment protection standards of ANSI/APSP/ICC-16 2017.
What this means for a family: if a drain lacked a compliant cover or the required systems, or a gate or warning was missing, that becomes one of the facts examined in deciding whether a duty was breached. None of it proves fault on its own. The law asks whether there was a duty, whether it was breached, whether the breach caused the harm and what harm resulted. A family may weigh which of these duties connects to what they saw, and that is the kind of question a conversation with an attorney can help sort out.