Children may be big enough to crawl into a problem but not strong enough to get themselves out. The bucket had cleaning fluids in it and represented a poisoning as well as a drowning hazard. Swimming pools, of course, are a hazard. It can happen when children are supervised or unsupervised. Pools should be properly enclosed, but even that is no guarantee.
Children fall in trying to get a toy floating on the water.
They can also slide between a pool cover and the water. State law in Connecticut and New York requires homeowners to fence in their pools. Fires and burns are the leading cause of death in children one to four years old. Local fire marshals urge parents to plan fire drills with their children. Make sure each person in the house knows two ways out of each room and have a designated meeting place outside.