Thought it was a draining issue, but found no clogs. Soaked up all the water with a towel and by the next morning it was back. Soaked up all the water again and this time turned off the water. This solved the problem so I decided it wasn't a draining or water backing up issue, but a faulty water inlet valve. Ordered the valve and it was at my door less than 24 hours later. Watched the provided video, easy fix!