Would the people become 10x heavier? If so, drowning becomes a serious risk, as these hypothetical humans would obtain a much smaller percentage of their needed swimming-force from their buoyancy, and being 10x stronger would not save them . (Ex. Suppose that normal humans are 10% denser than water, and are twice as strong as they need to be to tread. Aka, they can tread 2*10%= 20% of their own weight. Therefore, your hypothetical humans would also be able to tread 20% of their own weight, but now buoyancy only provides an additional 10% of their weight. Meaning they have only 30% of the necessary force, and are not nearly strong enough to swim without massive flotation devices.).
If the people stay roughly the same weight, then they become much more dangerous to each other and themselves. They can now jump about 3 times as high, greatly increasing the risk of landing badly. A toddler could easily push you out of a window. And it becomes impossible to subdue somebody without using weapons, as one small kick from them will launch you(and them) into orbit, meaning that cops and bouncers will favor the use of deadly weapons.