It is a grimly familiar toll. Since the start of the heatwave, seven teenage boys have lost their lives in suspected drownings at lakes, canals, quarries and rivers across the UK as they sought to cool down with friends in record temperatures.
Now rescue services are warning this number is likely to double by the end of July, as young people remain unaware of the dangers of jumping into cold water in hot weather and are prone to taking risks in unsafe waters without adults around. On Tuesday it was announced that a total of 13 people had died in open water since the start of the heatwave.
