The London Borough of Bexley has announced the investment to improve the water playground and toilet facilities.
The work began on January 15 and will see the old surface and equipment replaced.
The new design will include waist-level water activation posts to ensure accessibility for those with disabilities and mobility issues.
The park will also feature new technology to conserve water and encourage active play.
The play area will be divided into sections, with one end featuring low-level characters and gentle water sprays for younger children and beginners, while the other end will have more challenging water features for confident children.
The toilets opposite the car park will reopen soon after refurbishment, while the Mansion House toilets will close for similar works.
Councillor Richard Diment, Bexley’s cabinet member for neighbourhoods, said: “We’re making a significant investment in Danson splash park and in the toilet facilities because we know how important these are for local families, particularly those who don’t have gardens.
“We’ve ensured that the water playground will be fully accessible and more environmentally friendly but that most importantly of all children of all ages can enjoy it.
“These improvements will ensure that the water playground continues to be enjoyed by the community for many years to come.”
The improvement works are expected to take several months, with the water playground due to reopen in spring 2025.