basement water causes 9

https://getbasementfloodingstlouisway.ironwoodscope.com/posts/understanding-basement-flooding-in-st.-louis-why-it-happens-and-what-to-do

Basement water usually comes from heavy rain saturating the ground, poor drainage around the foundation, or a failing sump pump. Cracks in foundation walls or floors let groundwater seep in, while leaky pipes or condensation from high humidity can also cause problems. Even a small clog in the gutter downspout can direct water right against the house.