Hot Water Bottles
The numbers from the International Burn Injury Database show that 239 children experienced life-altering burn and scald injuries from hot water bottles in 2025.
Hot water bottles can be dangerous and cause burns if they are not cared for or used properly so please read the information below thoroughly and take care.
How to fill your hot water bottle safely
- Bottles should only be filled by adults.
- The bottle should be held upright by the neck.
- Use cooled boiled water from the kettle to fill the bottle. Let the boiled water cool for about 5 mins before filling the bottle.
- Fill to a maximum of two thirds full.
- Carefully let out the air from the bottle, holding the neck away from you as you do it, before putting the stopper on.
- Make sure the stopper is screwed on tightly.
Using your hot water bottle safely
- Lullaby Trust advises never putting a hot water bottle in your baby’s sleep space – instead use the water bottle to warm the bed and then remove.
- Never put a hot water bottle directly on your skin, use a cover.
- Remind older children not to sit or lie on hot water bottles.
Do hot water bottles expire?
Yes, they do.
Rubber deteriorates over time so old hot water bottles can burst or leak and cause serious burns. It is advised to regularly check for signs of wear and tear and not use hot water bottles that are more than two years old.
The hot water bottle flower symbol
The flower symbol, below, found on hot water bottles, helpfully indicates exactly when it was made which enables you to know if it is more than two years old and should be replaced.
The number in the middle is the year it was made, the flower segments represent the 12 months of the year and the dots inside those represent the number of weeks. So this hot water bottle was made in April 2021 and is more than two years old.
British Standard Update
After National Burn Awareness Day 2024 and the continued interest in the safety of hot water bottles an investigation by Ken Dunn (Vice Chair of Trustees) of the British Standards Institute (BSI) website revealed that the BS 1970:2012 regarding hot water bottles manufactured from rubber and PVC was withdrawn on 4/3/24 and the responsible technical committee, PRI/68, was disbanded on 18/07/22. Given the growing number of injuries from hot water bottles, a query was logged on 16/10/2024 with the BSI expressing concern at the withdrawal of the standard and asking when a replacement standard is to be published.
Following these concerns from the Burn Care Community, including Children’s Burns Trust, The British Standards Institute (BSI) have reinstated a committee to review BS1970:2012 regarding hot bottles which was withdrawn in March 2024.
Ken Dunn (vice chair of Trustees) has been invited to join the committee and we look forward to sharing an update soon. (Updated July 2025)
Update September 2025 – In accordance with the results of the recent committee ballot, both standards will be reinstated.
- BS 1970:2012 – Hot water bottles manufactured from rubber and PVC –Specification
- BS 8433:2004 – Microwavable personal warmers – Specification
Use your hot water bottle safely
Hot water bottles can be dangerous and cause burns if they are more than 2 yrs old, not cared for or used properly – look for the flower symbol. Never fill a hot water bottle with boiling water. Please read our safety information.
Impact
children a day are burned by hot drinks
children were burned or scalded in 2025
decline in fundraising income last year
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