Young children and inexperienced swimmers will be banned from the main Olympic pool in the London Aquatics Centre on safety grounds.
The 50m competition pool where Michael Phelps won four gold medals during 2012 is out of bounds to beginners because it has no shallow end.
The majority of the "leisure swimmers" using the complex will be restricted to the practice pool which sits outside the main complex.
The Aquatics Centre, which cost more than £250m to build, is being managed by the London-based leisure company GLL.
– Peter Bundey, GLL Deputy Managing Director
The main pool is 3m deep so there's no touching the bottom at the end of your length It is for fitness swimmers and people who are competent to swim.
"We've risk assessed and there'll be no child under the age of eight and people will need to be able to swim a 100m to be able to swim in that pool.
The Aquatics Centre opens to the public on Saturday, almost a decade after it was conceived by the award-winning architect Zaha Hadid.