Are hard water stains permanent? Hard water stains can become permanent if left too long. It's best to remove hard water stains as soon as they appear. While it may be tempting to let a mild stain sit until cleaning day, the longer it sits the harder it is to remove.
Hard water stains can become permanent if left too long. It's best to remove hard water stains as soon as they appear. While it may be tempting to let a mild stain sit until cleaning day, the longer it sits the harder it is to remove.