GORE-TEX is the gold standard for waterproof fabric. When undamaged and in good shape, GORE-TEX-treated fabrics will keep out any liquid water that lands on the surface.
However, over time, the quality of the waterproofing of GORE-TEX will degrade, and it will no longer perform like new. Most GORE-TEX materials have a waterproof rating of 28,000 mm.