Analysis published by Hubbub claims more than a third of us own a paddling pool and 27% were planning on using it last weekend (7-8 July).
According to the charity, the average paddling pool uses 530 litres, which is more than three times the total daily amount of water usually used by one person.
Hubbub are warning that the resulting pressure on water supplies, along with people taking longer showers and using hosepipes more, could lead to some households across the country experiencing low water pressure as water companies battle to keep up with demand.
And it’s not just the kids who’ll be having a dip either, according to the charity.
Just over half of parents with children under 16 plan to use a paddling pool this weekend, but so do 16% of parents with children aged over 16 and 23% of non-parents.
Hubbub have offered the following tips for people to save water but still stay cool and entertained as the heatwave continues:
Hubbub chief executive, Trewin Restorik, said: ‘It’s astonishing how much water it takes to fill a super-sized pool just to use for a day. As well as being a huge drain on water supplies they can add to water bills and take hours to fill. No-one wants to be a killjoy – it’s really hot and we’re all looking for ways to keep cool and have fun in the sun. There are lots of ways to do that whilst using a bit less of one our most precious resources and we’ll share these on social media through the heatwave using #tapchat.’