Can a waffle slab be built on a site with a high water table?

It can, but genuinely needs careful engineering — a high water table affects how the void beneath the pods behaves and can influence waterproofing requirements, so your soil report needs to identify this clearly upfront.

On genuinely difficult sites, your engineer may recommend an alternative system if a waffle slab isn’t the most suitable fit — worth trusting that assessment rather than assuming every site suits the same foundation type.

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