As far as I know, nobody has been hurt from floods while in a Waymo. They hide their safety data from the public though (https://www.theverge.com/2022/1/28/22906513/waymo-lawsuit-ca...) so it's hard to say for sure. They've certainly been involved in crashes, killed pets (I actually give them a pass on the bodega cat), run over elementary school children, etc. Waymo has said it's only a matter of time until they kill someone and they've got plans for how to handle deaths caused by their cars, but they expect the public to accept those deaths.