Did you know your shower water can pass through a charcoal filter? Most people are aware that the quality of their drinking water can be improved by passing it through a filter. The same reasoning stands for filtering your shower water. In particular well water or municipal water supplies that have hard water. Your shower can be filtered to remove any contaminates or particles that may be present in shower water. Charcoal shower filters are available at any hardware store. Follow the instructions when purchasing one because you do need to replace the filters on a regular basis for it to maintain effectiveness.