A NATIONAL charity has warned of the dangers of drowning in unsupervised waters after a TikTok showing three people on an inflatable sofa in the River Severn.

The TikTok video, posted by @Jackdontwannaknow, shows three men sitting on an inflatable sofa as they float down the river.

The Royal Life Saving Society helps spread information on safety around water and drowning prevention techniques.

A spokesperson for The Royal Life Saving Society said: "At the Royal Life Saving Society, we appreciate that people want to enjoy the hot weather, have fun and cool off in open water.

"However, we strongly advise that this is done in a safe and supervised way.

"Unfortunately we are hearing about a growing number of tragic drowning incidents in lakes, rivers and at the coast during the current heatwave, and we urge people to make themselves and their families aware of the hidden dangers associated with open water swimming by visiting our website at www.rlss.org.uk."

@jackdontwannaknow #fyp #heatwaves #wales ♬ original sound - Jackdontwannaknow

Since sharing the video, it has been viewed over 182,000 times and has amassed 24.1k likes.

The video is captioned "If you see some lads floating down the River Severn, it's probably us."

READ MORE: Viral TikTok shows three men on sofa in River Severn

With temperatures expected to reach up to 37C today in Worcester, local authorities have warned against swimming in unsupervised bodies of water. 

The Malvern Hills Trust has already warned the public to avoid swimming in Gullet Quarry.

READ MORE: The Royal Life Saving Society UK warning after teenager death

The Royal Life Saving Society UK advise the public to remember to always find a lifeguarded swimming site and to remember that the water at open and inland sites is often much colder than it looks.

The charity also advises to always swim parallel to the shore so that you’re never too far away from it, to be mindful of strong currents in the water and to always bring a friend.

In an emergency call 999 and ask for the Fire and Rescue service when inland and the Coastguard if at the coast.