Try making a mix of 2 parts water, 1 part bleach and clean with a sponge.
What are the stains from on your bathroom walls? And, what kind of walls do you have in your bathroom...painted, tiled, wood, stone....? Need this info so we can help you.
They are tiled. I have galvanized pipes and the water is properly making the mess stains on the walls/floors. Thanks for your help/info!!!