Is There Any Advantage of Hard Water? Beyond the Scale and Scum
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to the World Health Organization, there is no conclusive evidence that water hardness causes adverse health effects in humans. This fact raises a key question for many households: is there any advantage of hard water beyond the visible annoyances?