Many more drown in New Zealand than die at work. There is heavy regulation of workplace risks. The same cannot be said for people to jump into beaches, rivers and streams. Many more go to work each day as compared to going swimming.

Source: Annual Statistics » DrownBase and Workplace fatalities by industry | Worksafe.
Voluntary assumption of risk cuts no ice with those that champion stronger occupational health and safety regulation. The approach to water safety is near laissez-faire both in terms of the rules and enforcement and certainly in terms of success in reducing drownings. The large variations in annual drownings suggest that human behaviour has a lot to do with drownings.
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