Swimming pools are like magnets when it comes to attracting dirt and wind-blown debris. Likewise, pools tend to attract small children. Especially those who are curious and left unattended. Under no circumstances should children ever be allowed in swimming pools by themselves. Even if your backyard pool is enclosed with a fence and gate, don't become too complacent.
Babies learn to climb out of their cribs before they learn to walk.
Youngsters learn to climb fences before they're able to ride two-wheelers. If you think a gate is going to keep them in or out, you're badly mistaken. Especially if the gate swings inward and isn't locked. Some homeowners have equipped their backyard swimming pools with alarms that sense large splashes.