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Do you know the Drowning Chain of Survival?

Posted on July 9, 2026 in First Aid Guides

The recent heatwaves have sadly been accompanied by a number of water-related fatalities across the UK. While no one expects a day out near the water to end in tragedy, knowing how to respond could make all the difference.

The Drowning Chain of Survival is a series of five critical actions that significantly improve a person’s chance of surviving a drowning emergency. While prevention is always the goal, knowing each link in the chain could help save someone’s life.

Drowning Chain of Survival - Underwood Training

1. Prevent Drowning – Be safe in and around the water

Identify hazards such as strong currents, tides, cold water, submerged objects and sudden changes in depth. Never underestimate inland water. Rivers, lakes, canals and reservoirs can all present serious hazards.

Don’t be fooled by warm weather. Rivers, lakes, reservoirs and coastal waters can remain dangerously cold even during a heatwave. Sudden immersion may trigger cold water shock, causing an involuntary gasp, rapid breathing and loss of swimming control within seconds.

  • Swim in designated water-safe areas ideally where life-guards are present
  • Stay within arms reach of children whenever they are in or near water
  • Wear an appropriate life-jacket or buoyancy aid when using boats, kayaks, paddleboards or other watercraft.
  • Learn how to swim and practice water safety survival skills

2. Recognise Distress – Call for Help

Remember that drowning is often silent. A casualty may be unable to shout, wave or call for help.

  • Spot the signs of a person in trouble and immediately raise the alarm.
  • Call 999 and ask for the Coastguard if at the coast, or the appropriate emergency service for inland water incidents.
  • Stay on the scene wherever possible – keeping a constant watch can ensure that the emergency services can quickly reach the casualty.

3. Provide Flotation – to prevent submersion

Stay out of the water to reduce the risk of the casualty pulling you under. If possible, throw something that floats to the casualty to help keep them above water and conserve energy.

If you find yourself unexpectedly in difficulty, remember: Float to Live. Lean back, spread your arms and legs, and control your breathing until you can call for help or self-rescue. Floating in a swimming pool is a fantastic life-saving skill that the whole family can be encouraged to practice.

4. Remove from the Water – only if safe to do so 

Encourage the casualty to self-rescue by giving clear directions towards the nearest safe exit.

Only if safe to do so, rescue a casualty using any flotation available.

Remember: reach or throw, don’t go.

5. Provide Care as Needed – seek medical attention

Once out of the water, assess responsiveness and breathing.

Begin CPR if required and continue until emergency services take over or the casualty recovers. For a casualty of any age who is not breathing normally when rescued from water begin CPR with five initial rescue breaths before continuing with cycles of 30 chest compressions and two rescue breaths (unless the 999 call handler instructs you to follow an alternative ratio).

A common question is whether water in the lungs prevents rescue breaths from working. In many drowning incidents, the airway closes reflexively, meaning there is often less water in the lungs than people expect. If water/fluids do appear at the mouth, briefly roll the casualty onto their side for only a few seconds before immediately resuming CPR. Use an AED as soon as it is available; once professionals arrive they will also add oxygen.

Even if someone appears to recover after a drowning incident, they should always be assessed by medical professionals.

Every link in the Drowning Chain of Survival matters. Recognising danger early, knowing how to help safely, and providing prompt first aid can make the difference between life and death. As always, prevention is the strongest link in the chain. Enjoy the water, respect it, and equip yourself and your family with the knowledge and skills that could one day save a life.

Learning CPR and emergency first aid gives you the confidence to act when every second counts. We hope you never need these skills – but if you do, they could help save someone’s life.

This article reflects UK guidance available at the time of publication and is intended for educational purposes. In an emergency, always call 999 and follow the advice of the emergency services.

Further Information and Sources

This article has been written using current guidance and information from recognised organisations, including: