Accurately calculating the risk of a lifeguard job seems tough to me. It seems to me it’s a rather binary risk. You either don’t drown or you drown, but obviously the less probable of those outcomes is very serious. In other dangerous jobs, there is more of a gradient of danger.
Saving a panicky drowning person can involve them punching you etc. Local hazards can include sea life, infections, debris, rocks etc leading to a host of serious injuries.
