Sports and recreation
Swimming
Estimated acute risk associated with recreational swimming.
Base risk estimate
0.006 micromorts per hours
Population-level estimate. Not a personal prediction.
Assumptions
Assumes recreational swimming for an average adult.
Limitations
Risk varies by swimming ability, open water vs pool, supervision, alcohol use, and conditions. Per-hour exposure data is not routinely published, making this estimate highly uncertain.
Source notes
Placeholder value for development only. CDC MMWR Vital Signs 2024 ('Drowning Death Rates, Self-Reported Swimming Skill, Swimming Lesson Participation, and Recreational Water Exposure — United States, 2019–2023', mm7320e1) provides drowning fatality counts and self-reported water exposure data. The CDC acknowledges that population-based drowning rates do not account for individual water exposure, and per-hour rates are not directly calculable from published national surveillance data.
Last reviewed
6/10/2026