Why does water remain on the floor after washing? Cause ■ Heated and sterilized water remains after washing to prevent food odor and contamination from a drain hose. How to fix ■ Residual water is sterilized as it is heated at a high temperature from a previous cycle therefore free from contamination. ■ When a cycle starts, residual water is drained and water is filled again. Please be assured it is safe to use the product.