Broken appliances? Crusty faucets? Blocked showerhead? Don't be so quick to blame yourself for your home's less-favorable features - it's more than likely that you're dealing with hard water. You're keen to know how to tell if you have hard water, and that's exactly what this guide will cover. 🔎 11 Telltale Signs of Hard Water Soap Scum on your Shower The most obvious sign of hard water is soap scum on your