Giant bubbles, a sea of foam and geyser-spouting waters are coming to Battersea this summer.
Battersea Park will be transformed into London’s first family-friendly aqua obstacle course on Sunday August 7.
Splash Fest is organised by the Royal National Lifeboat Institution and all profits will help fund their life-saving work.
The ticketed event will feature five zones of water-themed challenges and games over a 2.5km trail.
The splash-tasic zones include Bubbly Brook, Wild Wild Water and Crazy Canon.
RNLI spokesperson Laura Haslam said: “The event aims to appeal to London families who may not be aware of the RNLI – introducing them to the charity but in a really fun and engaging way, while also providing them with a good value family day out and plenty of important water safety advice.
“Thousands of families are expected to join us for Splash Fest, but tickets are selling fast so we’d encourage anyone who is interested to get theirs now.”
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Splash Fest is ideal for children aged around 7-12 and has been created to keep families entertained throughout the day.
There will also be an event village which will feature live music, entertainment and food and drink.
As a charity, the RNLI relies on public donations and legacies to maintain its rescue service.
Since it was founded in 1824 its lifeboat crews and lifeguards have saved over 141,000 lives.
In London, the charity provides a search and rescue service from its three lifeboat stations, at Tower, Chiswick and Teddington, to any point within the tidal reaches of the River Thames.
Most of the RNLI’s lifeboats at its 237 stations around the UK and Ireland are operated by volunteers but at Tower and Chiswick full-time lifeboat crews work 12-hour shifts to ensure this on-call commitment.
Splash Fest participants are advised to bring towels, a change of clothes, suncream and a hat.
Tickets on the day will cost £22 for adults and £10 for children aged 3-18, but are available at a discounted rate if purchased in advance from www.splashfest.co.uk. Under 3s go free.