West Midlands Ambulance Service are warning people to avoid swimming in lakes, rivers and other open water.
It comes after 17-year-old Russell O'Neill died at a quarry near the Malvern Hills in Worcestershire at the weekend.
The Ambulance Service is urging people not to risk their lives.
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Dry overnight with clear spells.
Dry on Thursday. Best of the sunshine in the morning.
A19-year-old man has been arrested and a motorcycle has been seized in connection with the incident.