What are the potential causes of red residue in water and how can it be effectively treated or removed?

The potential causes of red residue in water can be due to high levels of iron or manganese in the water supply. This can be caused by natural deposits in the ground or corrosion in pipes. To effectively treat or remove red residue in water, methods such as filtration, ion exchange, or chemical oxidation can be used. It is important to consult with a water treatment professional to determine the best solution for your specific situation.