Sadly every summer children drown swimming in unsupervised bodies of water during heatwaves and every time there is a freeze they play on frozen canals, ponds, pools and lakes.
Not just children. Just a couple of days ago an older man spent 40 minutes in a frozen lake not far from me, having gone through the ice trying to rescue his dog. The dog died and the gent only survived due to the efforts of passers by and the emergency services. He is still having treatment.
There are several reports in the papers of police across the country ordering people off frozen lakes.